Initializes the plugin, this will be executed after the plugin has been created.
This call is done before the editor instance has finished it's initialization so use the onInit event
of the editor instance to intercept that event.

@method init
@param {tinymce.Editor} ed Editor instance that the plugin is initialized in.
@param {string} url Absolute URL to where the plugin is located.
function(ed) {
			var t = this, showMenu, contextmenuNeverUseNative, realCtrlKey, hideMenu;

			t.editor = ed;

			contextmenuNeverUseNative = ed.settings.contextmenu_never_use_native;

			/**
			 * This event gets fired when the context menu is shown.
			 *
			 * @event onContextMenu
			 * @param {tinymce.plugins.ContextMenu} sender Plugin instance sending the event.
			 * @param {tinymce.ui.DropMenu} menu Drop down menu to fill with more items if needed.
			 */
			t.onContextMenu = new tinymce.util.Dispatcher(this);

			hideMenu = function(e) {
				hide(ed, e);
			};

			showMenu = ed.onContextMenu.add(function(ed, e) {
				// Block TinyMCE menu on ctrlKey and work around Safari issue
				if ((realCtrlKey !== 0 ? realCtrlKey : e.ctrlKey) && !contextmenuNeverUseNative)
					return;

				Event.cancel(e);

				// Select the image if it's clicked. WebKit would other wise expand the selection
				if (e.target.nodeName == 'IMG')
					ed.selection.select(e.target);

				t._getMenu(ed).showMenu(e.clientX || e.pageX, e.clientY || e.pageY);
				Event.add(ed.getDoc(), 'click', hideMenu);

				ed.nodeChanged();
			});
			
			ed.onRemove.add(function() {
				if (t._menu)
					t._menu.removeAll();
			});

			function hide(ed, e) {
				realCtrlKey = 0;

				// Since the contextmenu event moves
				// the selection we need to store it away
				if (e && e.button == 2) {
					realCtrlKey = e.ctrlKey;
					return;
				}

				if (t._menu) {
					t._menu.removeAll();
					 t._menu.destroy();
					Event.remove(ed.getDoc(), 'click', hideMenu);
					t._menu = null;
				}
			};

			ed.onMouseDown.add(hide);
			ed.onKeyDown.add(hide);
			ed.onKeyDown.add(function(ed, e) {
				if (e.shiftKey && !e.ctrlKey && !e.altKey && e.keyCode === 121) {
					Event.cancel(e);
					showMenu(ed, e);
				}
			});
		}