fix(ng1): use $q promises instead of the native Promise (#378)

src/plugins/plugin.ts

@@ -88,15 +88,15 @@ function callCordovaPlugin(pluginObj: any, methodName: string, args: any[], opts
 }
 
 function getPromise(cb) {
-  if (window.Promise) {
-    return new Promise((resolve, reject) => {
-      cb(resolve, reject);
-    });
-  } else if (window.angular) {
+  if (window.angular) {
     let $q = window.angular.injector(['ng']).get('$q');
     return $q((resolve, reject) => {
       cb(resolve, reject);
     });
+  } else if (window.Promise) {
+    return new Promise((resolve, reject) => {
+      cb(resolve, reject);
+    });
   } else {
     console.error('No Promise support or polyfill found. To enable Ionic Native support, please add the es6-promise polyfill before this script, or run with a library like Angular 1/2 or on a recent browser.');
   }