DOCUMENTATION: Moved installation instructions to separate page (espressif#561)

* DOCUMENTATION: Moved installation instructions to separate page

* Added Fedora to contents table
* Added Issue/Bug Report section to README
* Some minor improvements

* DOCUMENTATION: Rename directory doc to docs

* Also move ISSUE_TEMPLATE.md to docs directory

* DOCUMENTATION: Use current repo's files

* This makes it consistent instead  of having few local and few pointing to
  espressif/arduino-esp32 by all linking to local files

* DOCUMENTATION: Fix hyperlink to issue/bug template in contents

* DOCUMENTATION: contents: supress platform specific installation instruction

Author: Raienryu97

README.md

@@ -2,160 +2,46 @@
 
 [![Build Status](https://travis-ci.org/espressif/arduino-esp32.svg?branch=master)](https://travis-ci.org/espressif/arduino-esp32)
 
-## Need help or have a question? Join the chat at [![https://gitter.im/espressif/arduino-esp32](https://badges.gitter.im/espressif/arduino-esp32.svg)](https://gitter.im/espressif/arduino-esp32?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+### Need help or have a question? Join the chat at [![https://gitter.im/espressif/arduino-esp32](https://badges.gitter.im/espressif/arduino-esp32.svg)](https://gitter.im/espressif/arduino-esp32?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
+## Contents
 - [Development Status](#development-status)
-- [Installation Instructions](#installation-instructions):
-  + [Using Arduino IDE](#using-through-arduino-ide)
-    + [Windows](https://github.com/espressif/arduino-esp32/blob/master/doc/windows.md)
-    + [Mac OS](#instructions-for-mac)
-    + [Debian/Ubuntu](#instructions-for-debianubuntu-linux)
-    + [Decoding Exceptions](#decoding-exceptions)
-  + [Using PlatformIO](#using-platformio)
-  + [Using as ESP-IDF component](#using-as-esp-idf-component)
+- [Installation Instructions](#installation-instructions)
+- [Decoding Exceptions](#decoding-exceptions)
+- [Issue/Bug report template](#issuebug-report-template)
 - [ESP32Dev Board PINMAP](#esp32dev-board-pinmap)
 
 ## Development Status
 Most of the framework is implemented. Most noticable is the missing analogWrite. While analogWrite is on it's way, there are a few other options that you can use:
-- 16 channels [LEDC](https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/esp32-hal-ledc.h) which is PWM
-- 8 channels [SigmaDelta](https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/esp32-hal-sigmadelta.h) which uses SigmaDelta modulation
-- 2 channels [DAC](https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/esp32-hal-dac.h) which gives real analog output
+- 16 channels [LEDC](cores/esp32/esp32-hal-ledc.h) which is PWM
+- 8 channels [SigmaDelta](cores/esp32/esp32-hal-sigmadelta.h) which uses SigmaDelta modulation
+- 2 channels [DAC](cores/esp32/esp32-hal-dac.h) which gives real analog output
 
 ## Installation Instructions
 
-### Using through Arduino IDE
-
-#### [Instructions for Windows](doc/windows.md)
-
-#### Instructions for Mac
-- Install latest Arduino IDE from [arduino.cc](https://www.arduino.cc/en/Main/Software)
-- Open Terminal and execute the following command (copy->paste and hit enter):
-
-  ```bash
-  mkdir -p ~/Documents/Arduino/hardware/espressif && \
-  cd ~/Documents/Arduino/hardware/espressif && \
-  git clone https://github.com/espressif/arduino-esp32.git esp32 && \
-  cd esp32/tools/ && \
-  python get.py
-  ```
-- Restart Arduino IDE
-
-#### Instructions for Debian/Ubuntu Linux
-- Install latest Arduino IDE from [arduino.cc](https://www.arduino.cc/en/Main/Software)
-- Open Terminal and execute the following command (copy->paste and hit enter):
-
-  ```bash
-  sudo usermod -a -G dialout $USER && \
-  sudo apt-get install git && \
-  wget https://bootstrap.pypa.io/get-pip.py && \
-  sudo python get-pip.py && \
-  sudo pip install pyserial && \
-  mkdir -p ~/Arduino/hardware/espressif && \
-  cd ~/Arduino/hardware/espressif && \
-  git clone https://github.com/espressif/arduino-esp32.git esp32 && \
-  cd esp32/tools/ && \
-  python get.py
-  ```
-- Restart Arduino IDE
-
-#### Instructions for Fedora
-- Install the latest Arduino IDE from [arduino.cc](https://www.arduino.cc/en/Main/Software). `$ sudo dnf -y install arduino` will most likely install an older release.
-- Open Terminal and execute the following command (copy->paste and hit enter):
-
-  ```bash
-  sudo usermod -a -G dialout $USER && \
-  sudo dnf install git python3-pip python3-pyserial && \
-  mkdir -p ~/Arduino/hardware/espressif && \
-  cd ~/Arduino/hardware/espressif && \
-  git clone https://github.com/espressif/arduino-esp32.git esp32 && \
-  cd esp32/tools/ && \
-  python get.py
-  ```
-- Restart Arduino IDE
+- Using Arduino IDE
+  + [Instructions for Windows](docs/arduino-ide/windows.md)
+  + [Instructions for Mac](docs/arduino-ide/mac.md)
+  + [Instructions for Debian/Ubuntu Linux](docs/arduino-ide/debian_ubuntu.md)
+  + [Instructions for Fedora](docs/arduino-ide/fedora.md)
+- [Using PlatformIO](docs/platformio.md)
+- [Building with make](docs/make.md)
+- [Using as ESP-IDF component](docs/esp-idf_component.md)
 
 #### Decoding exceptions
 
 You can use [EspExceptionDecoder](https://github.com/me-no-dev/EspExceptionDecoder) to get meaningful call trace.
 
-### Using PlatformIO
-
-[PlatformIO](http://platformio.org) is an open source ecosystem for IoT
-development with cross platform build system, library manager and full support
-for Espressif ESP32 development. It works on the popular host OS: Mac OS X, Windows,
-Linux 32/64, Linux ARM (like Raspberry Pi, BeagleBone, CubieBoard).
-
-- [What is PlatformIO?](http://docs.platformio.org/page/what-is-platformio.html)
-- [PlatformIO IDE](http://platformio.org/platformio-ide)
-- Quick Start with [PlatformIO IDE](http://docs.platformio.org/page/ide/atom.html#quick-start) or [PlatformIO Core](http://docs.platformio.org/page/core.html)
-- [Integration with Cloud and Standalone IDEs](http://docs.platformio.org/page/ide.html) -
-  Cloud9, Codeanywehre, Eclipse Che (Codenvy), Atom, CLion, Eclipse, Emacs, NetBeans, Qt Creator, Sublime Text, VIM and Visual Studio
-- [Project Examples](https://github.com/platformio/platform-espressif32/tree/develop/examples)
-- [Using "Stage" (Git) version of Arduino Core](http://docs.platformio.org/page/platforms/espressif32.html#using-arduino-framework-with-staging-version)
-
-### Building with make
+#### Issue/Bug report template
+Before reporting an issue, make sure you've searched for similar one that was already created. Also make sure to go through all the issues labelled as [for reference](https://github.com/espressif/arduino-esp32/issues?utf8=%E2%9C%93&q=is%3Aissue%20label%3A%22for%20reference%22%20).
 
-[makeEspArduino](https://github.com/plerup/makeEspArduino) is a generic makefile for any ESP8266/ESP32 Arduino project.
-Using make instead of the Arduino IDE makes it easier to do automated and production builds.
+Finally, if you're sure no one else had the issue, follow the [ISSUE_TEMPLATE](docs/ISSUE_TEMPLATE.md) while reporting any issue.
 
-### Using as ESP-IDF component
-- Download and install [esp-idf](https://github.com/espressif/esp-idf)
-- Create blank idf project (from one of the examples)
-- in the project folder, create a folder called components and clone this repository inside
-
-    ```bash
-    mkdir -p components && \
-    cd components && \
-    git clone https://github.com/espressif/arduino-esp32.git arduino && \
-    cd .. && \
-    make menuconfig
-  ```
-- ```make menuconfig``` has some Arduino options
-    - "Autostart Arduino setup and loop on boot"
-        - If you enable this options, your main.cpp should be formated like any other sketch
-
-          ```arduino
-          //file: main.cpp
-          #include "Arduino.h"
-
-          void setup(){
-            Serial.begin(115200);
-          }
-
-          void loop(){
-            Serial.println("loop");
-            delay(1000);
-          }
-          ```
-
-        - Else you need to implement ```app_main()``` and call ```initArduino();``` in it.
-
-          Keep in mind that setup() and loop() will not be called in this case.
-          If you plan to base your code on examples provided in [esp-idf](https://github.com/espressif/esp-idf/tree/master/examples), please make sure move the app_main() function in main.cpp from the files in the example.
-
-          ```arduino
-          //file: main.cpp
-          #include "Arduino.h"
-
-          extern "C" void app_main()
-          {
-              initArduino();
-              pinMode(4, OUTPUT);
-              digitalWrite(4, HIGH);
-              //do your own thing
-          }
-          ```
-    - "Disable mutex locks for HAL"
-        - If enabled, there will be no protection on the drivers from concurently accessing them from another thread/interrupt/core
-    - "Autoconnect WiFi on boot"
-        - If enabled, WiFi will start with the last known configuration
-        - Else it will wait for WiFi.begin
-- ```make flash monitor``` will build, upload and open serial monitor to your board
 
 ## ESP32Dev Board PINMAP
 
-![Pin Functions](doc/esp32_pinmap.png)
+![Pin Functions](docs/esp32_pinmap.png)
 
 ## Hint
 
 Sometimes to program ESP32 via serial you must keep GPIO0 LOW during the programming process
-