Update AngularJS lazy loading guide

[ViieeS]

This is a (check one box):

• [ ] Bug Report
• [x] Feature Request
• [ ] General Query

My version of UI-Router is: 1.0.18

Needs to update the lazy loading guide.

Current Behavior:

Expected Behavior:

AngularJS officially support lazy loading since v1.6.7:

Documentation

Example:

New example based on the old one:

var futureState = {
    name: 'contacts.**',
    url: '/contacts',
    lazyLoad: function ($transition$) {
        var $q = $transition$.injector('$q');
        var $injector = $transition$.injector('$injector');
        var moduleName = "ContactsModule";

        return $q(function (resolve, reject) {
            $.getScript("./contacts.module.js", function () {
                resolve($injector.loadNewModules([moduleName]));
            });

        });
    }
};

[jrencz]

StateDeclaration.lazyLoad should return Promise<LazyLoadResult> but $injector.loadNewModules returns undefined

[ViieeS]

@jakebian yes, you're right. That's why we use $q service here.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

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