Prepare 2.1.0 release
Prepare 2.1.0 release

leizhao4/ember-pikaday,GabKlein/ember-pikaday,Inkstone-Inc/ember-pikaday-time,leizhao4/ember-pikaday,GabKlein/ember-pikaday,Inkstone-Inc/ember-pikaday-time,helm-inc/ember-pikaday-time,edgycircle/ember-pikaday,helm-inc/ember-pikaday-time,edgycircle/ember-pikaday