Use sbt 0.13.0-RC1
Fix scripted tests for sbt 0.13
Fix configuration order
Add exclude folder option + doc
Update README.md
Add 1.5.0 release notes
Use sbt 0.13 RC3
Set version 1.5.0
Set next development version
Update versions in readme
Set version 1.5.1
Set next development version
Update version in readme