request method modified to support string value returns from omnisharp endpoints - some of them don't return json
request method modified to support string value returns from omnisharp endpoints - some of them don't return json

hitesh97/omnisharp-atom,sgwill/omnisharp-atom,rambocoder/omnisharp-atom,tmunro/omnisharp-atom,sgwill/omnisharp-atom,joerter/omnisharp-atom,RichiCoder1/omnisharp-atom,joerter/omnisharp-atom,joerter/omnisharp-atom,tmunro/omnisharp-atom,rambocoder/omnisharp-atom,RichiCoder1/omnisharp-atom,sgwill/omnisharp-atom,tmunro/omnisharp-atom,hitesh97/omnisharp-atom,OmniSharp/omnisharp-atom,rambocoder/omnisharp-atom,RichiCoder1/omnisharp-atom,joerter/omnisharp-atom,OmniSharp/omnisharp-atom,sgwill/omnisharp-atom,hitesh97/omnisharp-atom,OmniSharp/omnisharp-atom,tmunro/omnisharp-atom,RichiCoder1/omnisharp-atom,hitesh97/omnisharp-atom