Gruntfile.js: remove templates from banner string
Gruntfile.js: remove templates from banner string

Simplify browserify's postBundleCB

joseph-onsip/SIP.js,ronlobo/SIP.js,Escaux/SIP.js,onsip/SIP.js,onsip/SIP.js,markandrus/SIP.js,josephfrazier/SIP.js