Added some additional angular snippets and changed the existing ones

to use the annotated syntax which supports minifications, see:
https://docs.angularjs.org/tutorial/step_05 (A note on minification).
Also added some variants that auto-insert the scope, which is commonly
done.

UltiSnips/javascript_angular.snippets

@@ -19,7 +19,49 @@ config(function($1) {
 endsnippet
 
 snippet acont "angular controller" i
-controller('${1:name}', function($2) {
+controller('${1:name}', ['${2:param_annotation}', function(${3:param}) {
 	$0
-});
+}]);
+endsnippet
+
+snippet aconts "angular controller with scope" i
+controller('${1:name}', ['$scope', function($scope) {
+	$0
+}]);
+endsnippet
+
+snippet adir "angular directive" i
+directive('${1:name}', ['${2:param_annotation}', function(${3:param}) {
+	$0
+}]);
+endsnippet
+
+snippet adirs "angular directive with scope" i
+directive('${1:name}', ['$scope', function($scope) {
+	$0
+}]);
+endsnippet
+
+snippet afact "angular factory" i
+factory('${1:name}', ['${2:param_annotation}', function(${3:param}) {
+	$0
+}]);
+endsnippet
+
+snippet afacts "angular factory with scope" i
+factory('${1:name}', ['$scope', function($scope) {
+	$0
+}]);
+endsnippet
+
+snippet aserv "angular service" i
+service('${1:name}', ['${2:param_annotation}', function(${3:param}) {
+	$0
+}]);
+endsnippet
+
+snippet aservs "angular service" i
+service('${1:name}', ['$scope', function($scope) {
+	$0
+}]);
 endsnippet