Fix readme badges

[ratanparai]

I'm submitting a...

[x] Bug report  
[ ] Performance issue
[ ] Feature request
[ ] Documentation issue or request
[ ] Other... Please describe:

Current behavior

After changing the github organization name, clicking travis build status badge take us to 404 page. Although the build status is showing as expected.

Expected behavior

We should see the build log by clicking the travis build status badge