Add reference to ECMAScript wiki with generators information.
Add reference to ECMAScript wiki with generators information.

facebook/regenerator,Jericho25/regenerator,RReverser/js-goto-transpiler,jlongster/transmogrifier,kittens/regenerator,liviuignat/regenerator,Jericho25/regenerator,jlongster/unwinder,facebook/regenerator,kittens/regenerator,jlongster/unwinder,liviuignat/regenerator,rafaelstz/regenerator,jlongster/unwinder,jlongster/transmogrifier,facebook/regenerator,rwaldron/regenerator,sebmck/regenerator,juliocanares/regenerator,sebmck/regenerator,RReverser/js-goto-transpiler,rafaelstz/regenerator,juliocanares/regenerator