updates pull request section of README
updates .gitignore
Fixed default crouton position when using translucent status bar.

Fixes #142
extract fix to separate method
easier signing configuration
formatting
finally a stable gradle build
using java 1.7 source compatibility
fixes lint issues; now min sdk version is at 8
updates copyright
fixes default color
Merge branch 'develop'

Conflicts:
	.gitignore
fixes javadoc, jar and signing
fixes icon