Updated all deps to latest, fixed travis build for node 0.8.x - all badges back in green

coffee-script 1.8.0
protagonist 0.15.0
winston 0.8.0
coveralls 2.11.2
express 4.9.5
mocha 1.21.4
nock 0.48.0
if it exists, it's [not re-decalred](https://github.com/YuzuJS/setImmediate/blob/master/setImmediate.js#L4)