Update "Building From Source" to 2.2-SNAPSHOT
Update "Building From Source" to 2.2-SNAPSHOT

Remove the references to old SBT version.
Remove the reference to Play20.wiki.git (documentation is inline).
Change references to "Play 2.0" to be just "Play".
Fix the SBT plugin to say 2.2-SNAPSHOT
benmccann/playframework,aradchykov/playframework,Shruti9520/playframework,richdougherty/playframework,richdougherty/playframework,hagl/playframework,marcospereira/playframework,rajeshpg/playframework,zaneli/playframework,hagl/playframework,hagl/playframework,mkurz/playframework,ktoso/playframework,benmccann/playframework,wegtam/playframework,playframework/playframework,benmccann/playframework,mkurz/playframework,Shruti9520/playframework,zaneli/playframework,benmccann/playframework,playframework/playframework,aradchykov/playframework,marcospereira/playframework,marcospereira/playframework,Shenker93/playframework,mkurz/playframework,zaneli/playframework,wegtam/playframework,Shruti9520/playframework,wsargent/playframework,richdougherty/playframework,rajeshpg/playframework,wsargent/playframework,Shruti9520/playframework,richdougherty/playframework,Shenker93/playframework,aradchykov/playframework,wsargent/playframework,aradchykov/playframework,wegtam/playframework,playframework/playframework,zaneli/playframework,mkurz/playframework,wegtam/playframework,ktoso/playframework,rajeshpg/playframework,hagl/playframework,Shenker93/playframework,ktoso/playframework,Shenker93/playframework,ktoso/playframework,rajeshpg/playframework,marcospereira/playframework,wsargent/playframework