Update README.md

README.md

@@ -1,5 +1,5 @@
-[![Build status](https://travis-ci.org/mpromonet/v4l2rtspserver.png)](https://travis-ci.org/mpromonet/v4l2rtspserver)
-[![CircleCI](https://circleci.com/gh/mpromonet/v4l2rtspserver.svg?style=svg)](https://circleci.com/gh/mpromonet/v4l2rtspserver)
+[![TravisCI](https://travis-ci.org/mpromonet/v4l2rtspserver.png)](https://travis-ci.org/mpromonet/v4l2rtspserver)
+[![CircleCI](https://circleci.com/gh/mpromonet/v4l2rtspserver.svg?style=shield)](https://circleci.com/gh/mpromonet/v4l2rtspserver)
 
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