add initial travis.yml
add initial travis.yml

based off the template on http://www.rust-ci.org/help/

tempbottle/rustboot,charliesome/rustboot,smkell/rustboot,thesam/rOSt,tempbottle/rustboot,smkell/rustboot,charliesome/rustboot,thesam/rOSt,YangFan789/fanmi-os