Merge pull request #18 from ccostel/master

Explanation for the OS X users

Author: igrr

README.md

@@ -13,7 +13,9 @@ Tested with the following Arduino IDE versions: 1.6.5-r2,
 - Download the tool archive from [releases page](https://github.com/esp8266/arduino-esp8266fs-plugin/releases/latest).
 - In your Arduino sketchbook directory, create tools directory if it doesn't exist yet.
 - Unpack the tool into tools directory (the path will look like `<home_dir>/Arduino/tools/ESP8266FS/tool/esp8266fs.jar)`.
-- Restart Arduino IDE.
+- Restart Arduino IDE. 
+
+On the OS X create the tools directory in ~/Documents/Arduino/ and unpack the files there
 
 ## Usage
 - Open a sketch (or create a new one and save it).