added travis tag to readme
added travis tag to readme

hhroc/yellr-server,thequbit/yellr-server,hhroc/yellr-server,thequbit/yellr-server,hhroc/yellr-server,Nolski/yellr-server,Nolski/yellr-server,Nolski/yellr-server,Nolski/yellr-server,hhroc/yellr-server,thequbit/yellr-server,thequbit/yellr-server