Add Travis CI build status badge to README.md
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HermesApp/Hermes,jmjones88/Hermes,devkinetic/hermes,HermesApp/Hermes,sephamorr/hermes,jups/Hermes,SsnL/Hermes,devkinetic/hermes,SsnL/Hermes,jups/Hermes,jmjones88/Hermes,sephamorr/hermes