adding upgrade notes (couldn't find another doc for them -- CHANGES looks old)
adding upgrade notes (couldn't find another doc for them -- CHANGES looks old)

ajturner/crisiscommons,adammck/crabgrass,ajturner/crisiscommons,riseuplabs/crabgrass,riseuplabs/crabgrass,nilclass/echosocial,adammck/crabgrass,riseuplabs/crabgrass,nilclass/echosocial,riseuplabs/crabgrass,nilclass/echosocial,adammck/crabgrass,riseuplabs/crabgrass,geoiq/digitalgazette,ajturner/crisiscommons,adammck/crabgrass,riseuplabs/crabgrass,ajturner/crisiscommons,geoiq/digitalgazette,nilclass/echosocial,geoiq/digitalgazette,riseuplabs/crabgrass,geoiq/digitalgazette