Add the IEditor.element typing to global since typings/* get overwritten

Author: guncha

lib/globals.ts

@@ -190,3 +190,9 @@ interface String {
     startsWith(str: string): boolean;
     endsWith(str: string): boolean;
 }
+
+declare module AtomCore {
+    export interface IEditor {
+        element: any;
+    }
+}