Add optional support for global tinymce asset loading url

Closes #44

Author: wesleycho

README.md

@@ -76,6 +76,10 @@ In addition, it supports these additional optional options
 - `format` Format to get content as, i.e. 'raw' for raw HTML, or 'text' for text only. Documentation [here](http://www.tinymce.com/wiki.php/api4:method.tinymce.Editor.getContent)
 - `trusted` When `true`, all TinyMCE content that is set to `ngModel` will be whitelisted by `$sce`
 
+This option is only supported when present on the `uiTinymceConfig` global injectable - this injectable needs to be an object.
+
+- `baseUrl` Sets the base url used by tinymce asset loading
+
 ```javascript
 myAppModule.controller('MyController', function($scope) {
   $scope.tinymceOptions = {

src/tinymce.js

@@ -7,6 +7,10 @@ angular.module('ui.tinymce', [])
     uiTinymceConfig = uiTinymceConfig || {};
     var generatedIds = 0;
     var ID_ATTR = 'ui-tinymce';
+    if (uiTinymceConfig.baseUrl) {
+      tinymce.baseURL = uiTinymceConfig.baseUrl;
+    }
+
     return {
       require: ['ngModel', '^?form'],
       link: function(scope, element, attrs, ctrls) {