Merge pull request #269 from javenwang/jasmine2

Jasmine2
fix issue that app will crash when we console.log(null)

this commit also enhances Log to accept more than one message arguments, as Ti doc says:
http://docs.appcelerator.com/titanium/latest/#!/api/Global.console-method-log
Merge pull request #270 from javenwang/log

fix issue that app will crash when we console.log(null)
updated git-summary
should require node_boot instead of node-boot