Documentation updates corresponding to the August 2014 VM updates

See http://blog.travis-ci.com/2014-08-22-upcoming-build-environment-updates/
Merge branch 'gh-pages' into ha-2014-august-updates

Conflicts:
	user/languages/java.md
Merge pull request #109 from travis-ci/ha-2014-august-updates

Documentation updates corresponding to the August 2014 VM updates