Some Links to know how to publish android apps
https://play.google.com/apps/publish/
http://developer.android.com/distribute/googleplay/publish/preparing.html
https://support.google.com/googleplay/android-developer/topic/2364761?hl=en&parent=2365624&ctx=topic
http://developer.android.com/distribute/googleplay/quality/core.html
http://developer.android.com/distribute/googleplay/quality/tablet.html
https://support.google.com/googleplay/android-developer/answer/188189?hl=en
http://developer.android.com/tools/help/proguard.html
http://developer.android.com/distribute/googleplay/publish/register.html