Fixes#661.
BREAKING CHANGE: The binding for ionInfiniteScroll has changed, as well
as how you finish it.
If you had this code before:
```html
<ion-content on-infinite-scroll="doSomething"></ion-content>
```
```js
function MyCtrl($scope) {
$scope.doSomething = function(scrollDoneCallback) {
doSomething();
scrollDoneCallback();
};
}
```js
Now, your code should look like this:
```html
<ion-content on-infinite-scroll="doSomething()"></ion-content>
```
``js
function MyCtrl($scope) {
$scope.doSomething = function() {
doSomething();
$scope.$broadcast('scroll.infiniteScrollComplete');
};
}
```