Ignore test that fails on AppHarbor
Ignore test that fails on AppHarbor

OmniSharp/omnisharp-server,syl20bnr/omnisharp-server,svermeulen/omnisharp-server,x335/omnisharp-server,corngood/omnisharp-server,corngood/omnisharp-server,syl20bnr/omnisharp-server,x335/omnisharp-server,mispencer/OmniSharpServer