Specified SBT version to use in build.properties file.
This is allowing any installed SBT version to successfully compile the project.
See http://www.scala-sbt.org/release/docs/Detailed-Topics/Command-Line-Reference
Merge pull request #25 from jletroui/sbt-version-spec

Specified SBT version to use in build.properties file.
Specify Scala 2.9.1 as Scala version to use
Merge pull request #28 from wajam/alex-scala-291

Specify Scala 2.9.1 as Scala version to use