Add Contributing guidelines (#174)

* Add Contributing Guidelines

* Add Code Style Convention in README

Author: adithya321

CONTRIBUTING.md

@@ -0,0 +1,34 @@
+# Contributing
+
+## Code style and structure
+
+* Set the Code Style Scheme to `Default` in Android Studio settings.
+* Run `Reformat Code` on changed files before committing.
+* Please check out the [Code Style for Contributors](https://source.android.com/source/code-style.html) section in AOSP and maintain as much consistency with them as possible.
+
+## Getting Started
+
+1. Submit an issue describing your proposed change.
+2. Fork the repository on GitHub.
+3. Clone the fork : `git clone https://github.com/your-username/android.git`
+
+## Making Changes
+
+* Create a branch : `git checkout -b branch-name`. Please avoid working directly on the
+    `master` branch.
+* Make commits of logical units.
+* Make sure your commit messages are in the proper format.
+* Make sure you have added the necessary tests for your changes.
+* Run _all_ the tests to assure nothing else was accidentally broken.
+
+## Submitting Changes
+
+* Push your changes to the branch in your fork of the repository.
+* Submit a pull request to the repository.
+* The contributors look at Pull Requests and review them on a regular basis. 
+
+## Additional Resources
+
+* [#amahi IRC channel](http://talk.amahi.org/)
+* [Forking Projects](https://guides.github.com/activities/forking/)
+* [Proper Git Commit Messages and an Elegant Git History](http://ablogaboutcode.com/2011/03/23/proper-git-commit-messages-and-an-elegant-git-history)

README.md

@@ -33,6 +33,11 @@ This is something to keep **private** and you obtain it by asking in the [Amahi
 
 3. Once you have built the application, you will be needing credentials to use the application. Go to Amahi website and create your account, once the account is activated, you will see the description on how to setup Amahi server. However, this is not strictly needed, as we have a set up of a demo server called "Welcome to Amahi" which you should see even without your own server installed.
 
+## Code Style Convention
+
+* Set the Code Style Scheme to `Default` in Android Studio settings.
+* Run `Reformat Code` on changed files before committing.
+* Please check out the [Code Style for Contributors](https://source.android.com/source/code-style.html) section in AOSP and maintain as much consistency with them as possible.
 
 ## Generating the documentation