documentation for input[checkbox] does not mention ng-checked

[rosyatrandom]

https://docs.angularjs.org/api/ng/directive/ngChecked

ng-checked is surely relevent to input[checkbox]; it merits a mention!

[Narretz]

Would you like to open a PR which adds this info? I think ng Checked isn't used much because ngModel is generally used to bind to checkbox. Im fact you can't use only one or the other.

[vgvenkat]

Can I take this one? I am guessing adding ngChecked to the Usage, Arguments and Example is enough, any suggestions?

[Narretz]

@vgvenkat Yes, please open a PR. I think a link to ngChecked with a short description should be sufficient.