fixing negative grouping issue

increment version, move demo js into separate file

fixed separator check bug (removed separator check)

remove tsconfig file

fixed issue where calling update in callback caused infinite rAF

fixing issue where grouping option was ignored

new initialize function checks for errors, removed changelog

build for last PR, update some things

Merge pull request inorganik#137 from vigie/ng2

Upgrading Angular 2 directive to be compatible with Angular version ^…

Merge pull request inorganik#130 from ThYpHo0n/master

Fix error TS2350 if you do a new CountUp call in Typescript