Adding Angular 1.6 support

[jonshaffer]

Accounting for lack of $onInit callback in 1.4 #252

[jonshaffer]

Using basic.html as an example you can test angular 1.6 using this branch locally by:

1. Update systemjs angular to 1.6
2. Update related demo $http as follows:

$http.get('/demos/data/100.json').success(function(data) {
  $scope.data = data;
});

to

$http.get('/demos/data/100.json').then(function(response) {
  $scope.data = response.data;
});

[reinfi]

Couldn't this be merged? This would help a lot of people to use this library.