Install instructions update

also added links to contributors and how to contribute

Readme.md

@@ -11,15 +11,25 @@ Apple removed the option to show the battery time remaining in the statusbar sin
 How do I install it?
 --------------------
 
-Download the source and compile it with XCode or click Downloads and hope that someone has uploaded a .app file for you to run.
+Two options:
+
+- Download [version 0.2](http://cl.ly/1K3M0h1x0Z1b), unzip and run the App
+- Download the source here from Github and compile it with XCode
 
 Is it accurate?
 ---------------
 
 The App shows the exact same time as you will see when you click the battery icon. The time is provided by Mac OS X itself and as accurate as you can get.
 
+How do I contribute?
+--------------------
+
+Fork this project, make some changes and submit a pull request. Check the issues tab for inspiration on what to fix. Please make sure you're fork is the latest development version!
+
+If you find any issues or have a feature request please contribute by submitting an issue here on Github!
+
 Who did make this app?
 ----------------------
 
-* codler / Han Lin Yap: created the first version of the app
-* mac-cain13 / Mathijs Kadijk: made some improvements
+* [codler](https://github.com/codler) / Han Lin Yap: created the [first version](https://github.com/codler/Battery-Time-Remaining) of the app
+* [mac-cain13](https://github.com/mac-cain13) / Mathijs Kadijk: made some improvements