Update README.md

Author: lynfogeek

README.md

@@ -1,4 +1,36 @@
 droidconNL-2014
 ===============
 
-Simple conference app made for the Droidcon NL 2014
+Simple conference app made for the Droidcon NL 2014. It simply displays the list of talks and different details / informations about it: speaker, description, room, etc.
+
+
+## Material Design
+
+The app tends to follow the [Material Design guidelines](http://www.google.com/design/spec/material-design/introduction.html) from Google.
+The app supports devices running from Android 4.0+ to Android 5.0 Lollipop.
+
+![App screenshot](https://github.com/lynfogeek/droidconNL-2014/blob/master/graphic/screenshot_readme.png) 
+
+## Features
+
+As previously said, the app is relatively simple, the goal was not to reproduce a complexe application like [the Google IO app](https://github.com/google/iosched) but a very simple one, focused on the minimum tasks. (And created within a weekend)
+
+The app contains:
+ * A schedule listing
+ * The conference's details view
+ * An option to favorite talks
+
+And you can also:
+ * Navigate to the conference site
+ * Give feedback on the organization
+
+ 
+## APK
+
+The APK can be found on the Google Play:
+
+<a href="https://play.google.com/store/apps/details?id=nl.droidcon.conference2014">
+  <img alt="Get it on Google Play"
+       src="https://developer.android.com/images/brand/en_generic_rgb_wo_60.png" />
+</a>
+