Add a Travis build status image to the readme
Add a Travis build status image to the readme

petems/tugboat,pearkes/tugboat,mtbottle/tugboat,beni55/tugboat,noma4i/tugboat,beni55/tugboat,haihappen/tugboat,conorsch/tugboat,Ferada/tugboat,haihappen/tugboat,noma4i/tugboat,conorsch/tugboat,Ferada/tugboat