Added changelog info for 2.0.1.
Added changelog info for 2.0.1.

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