Support for SBT 1.x

[petermant]

According to https://github.com/sbt/sbt/wiki/sbt-1.x-plugin-migration this test reporting plugin is not supported in sbt 1.x.

Are there any plans?

[TBonnin]

Teamcity 9+ supports sbt test reporting by default (Using the Simple Build Test runner). I think the README should mention this project is deprecated and no longer necessary for TC 9+

More info at: https://confluence.jetbrains.com/pages/viewpage.action?pageId=74844978