[Components][Form] document $deep and $flatten of getErrors()#4169
Merged
weaverryan merged 2 commits intosymfony:2.5from Nov 20, 2014 
Merged
[Components][Form] document $deep and $flatten of getErrors()#4169weaverryan merged 2 commits intosymfony:2.5from 
weaverryan merged 2 commits intosymfony:2.5from