Add Brakeman users to README
Add Brakeman users to README

kbrock/brakeman,bf4/brakeman,codeclimate/brakeman-deprecated,dfens/brakeman,liqites/brakeman,jlecour/brakeman,lee-leon/brakeman,cheerfulstoic/brakeman,bf4/brakeman,cheerfulstoic/brakeman,bf4/brakeman,lee-leon/brakeman,spcoder/brakeman,htdc/brakeman,github/brakeman,jakeatwork/brakeman,htdc/brakeman,codeclimate/brakeman-deprecated,dfens/brakeman,lee-leon/brakeman,kbrock/brakeman,dfens/brakeman,kbrock/brakeman,github/brakeman,jakeatwork/brakeman,htdc/brakeman,cheerfulstoic/brakeman,liqites/brakeman,jakeatwork/brakeman,jeffyip/brakeman,liqites/brakeman,masarakki/brakeman,jlecour/brakeman,jlecour/brakeman,masarakki/brakeman,jeffyip/brakeman,spcoder/brakeman,spcoder/brakeman,masarakki/brakeman