File-based resource names must contain only lowercase a-z, 0-9, or underscore

* changed NoDisplay theme to Translucent
The ClickActivity crashes on Android 6.0.1
See https://web.archive.org/web/20151116170752/https://code.google.com/p/android-developer-preview/issues/detail?id=2353 for solution

* Implement hasPermission for Android (API version >= 22)

Improved docs

Initial commit to activate greenkeeper, changed description to be more
precise.

Fix docs typos

Fix typo