Use activator
Update .travis.yml
ignore github buttons
Change url from joscha.github.com to joscha.github.io
Merge branch 'master' of github.com:dobau/play-authenticate into dobau-master

Conflicts:
	.travis.yml
	code/project/Build.scala
	samples/java/play-authenticate-simple-oauth/project/Build.scala
	samples/java/play-authenticate-usage/project/Build.scala
	test-app/project/Build.scala
Merge branch 'dobau-master' into 2.3.x