Removed references to 2.1 in roadmap.
Removed references to 2.1 in roadmap.

sschaef/docs,ar-android/docs,ar-android/docs,ar-android/docs,scala-ide/docs,wpopielarski/docs,sschaef/docs,ar-android/docs,scala-ide/docs,sschaef/docs,wpopielarski/docs,scala-ide/docs,wpopielarski/docs