Run Travis against Node v4.2.x (LTS)
Run Travis against Node v4.2.x (LTS)

https://docs.travis-ci.com/user/languages/javascript-with-nodejs/#Choosing-Node-versions-to-test-against

https://nodejs.org/en/blog/release/v4.2.0/

onsip/SIP.js,onsip/SIP.js