Add CommonJS support
Add CommonJS support

This lets tools like Browserify and Webpack use Tinycon.

lizlove/tinycon,lizlove/tinycon,jasondavis/tinycon,lcnbala/tinycon,tommoor/tinycon,jasondavis/tinycon,3rd-Eden/favicount,GerHobbelt/tinycon,natac13/tinycon,GerHobbelt/tinycon,GeekFreaker/tinycon,landsurveyorsunited/tinycon,Azzurrio/tinycon,doitwithdesign/tinycon