Documentation: add deprecation warning to AbstractController. Manually applied patch from dstar.
Documentation: add deprecation warning to AbstractController. Manually applied patch from dstar.

merb/merb,wycats/merb,wycats/merb,wycats/merb,merb/merb,merb/merb,benburkert/merb-core,wycats/merb,benburkert/merb-core,wycats/merb