Add test for no app directory found
Add test for no app directory found

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