added travis-ci build status to readme.md
added travis-ci build status to readme.md

cpass78/asimov-deploy,cpass78/asimov-deploy,daniellee/asimov-deploy,marefr/asimov-deploy,akselsson/asimov-deploy,marefr/asimov-deploy,akselsson/asimov-deploy,daniellee/asimov-deploy,marefr/asimov-deploy,akselsson/asimov-deploy