Updating demo
Updating demo

1. Demo now shows min / max validation in form.
2. Shortened some texts for readability.
3. Updated angular version.

g00fy-/angular-datepicker,pankas87/angular-datepicker-dirty-fix,frontapp/angular-datepicker,frontapp/angular-datepicker,pankas87/angular-datepicker-dirty-fix,g00fy-/angular-datepicker,DanTalash/angular-datepicker,DanTalash/angular-datepicker