Add new languages to list.
Remove manifest declaration for network state receiver.
Remove gradle instructions, since those are in the integration doc now.
Update instructions for maven
Update javadoc for Android SDK 1.6.2 release.
Merge branch 'android' of github.com:apptentive/apptentive-documentation
Merge pull request #11 from skykelsey/master

All doc changes for Android SDK 1.6.2 release