adding more infos on ActiveRecord.
adding more infos on ActiveRecord.

simonc/reform,swifthand/reform,halan/reform,francirp/reform,prosanelli/reform,bolshakov/reform,mipearson/reform,halan/reform,Miralaw/reform,eljojo/reform,joealba/reform,gdott9/reform,swifthand/reform,bolshakov/reform,prosanelli/reform,apotonick/reform,joealba/reform,parndt/reform,francirp/reform,eljojo/reform,mipearson/reform,trailblazer/reform,Miralaw/reform