Update default play version.

http://www.playframework.com/security/vulnerability/20130806-SessionInjection
Play 1.2.7
Do not detect a brand new Play2.2 project as a Play1 project

Play2.2 switched to the new sbt configuration format and does not provide project/Build.scala by default anymore
Implement test for not detecting play2.2
Merge pull request #25 from baloo/patch-1

Do not detect a brand new Play2.2 project as a Play1 project
Call export_env_dir
Merge pull request #26 from heroku/envdir

Call export_env_dir
updated jvm-common bundle
Move PATH to .profile.d
Merge branch 'titanous-path-env'
added test and publish scripts
updated to latest jvm-commons
Updated README [skip ci]
Fix compilation problem by providing more memory