Only apply jshint to staged JS files
Merge commit '4cd538fd0b8e6fcbe68cd4e4a8e39206103023b2' into develop

Conflicts:
	bin/.travis.yml
	bin/class-wordpress-readme-parser.php
	bin/install-wp-tests.sh
	bin/pre-commit
	bin/readme.md
	bin/svn-push
Embed YouTube demo video in readme; add markdown support

Fixes x-team/wp-plugin-dev-lib#19
Merge commit '6a9b2c7f6a8044f337152fb406ebe58f1c26b5ac' into develop

Conflicts:
	bin/readme.md
Merge commit '85f0b269038cb772d9353f7236a28757c10295af'
Reference master branch in TravisCI build badge

Fixes x-team/wp-plugin-dev-lib#26