Merge branch 'master' into develop
Change message output channel from STDOUT to STDERR.
Add referrals for "sbtenv" and "playenv" to README.
Add version 2.10.4 for scala-install plugin.
Merge pull request #7 from zaneli/install-scala2.10.4

Add version 2.10.4 for scala-install plugin.
Add old and RC versions for scala-install plugin.
Merge branch 'develop' into release/0.0.5
Bump version to 0.0.5.
Merge pull request #8 from mazgi/release/0.0.5

Release/0.0.5