Created definitions for lazy.js

"Like Underscore, but lazier"

https://github.com/dtao/lazy.js
http://danieltao.com/lazy.js/

seems to work well, only two issues (emerged when porting to TS 0.9.5):

* problems finding correct module/static/helper/declare var 
* overloaded Sequence methods that now have this ugly hacky hieracrhie