Update monaco-languages to 0.3.1

package.json

@@ -19,7 +19,7 @@
     "gulp": "^3.9.1",
     "http-server": "^0.9.0",
     "monaco-editor-core": "0.5.3",
-    "monaco-languages": "0.3.0",
+    "monaco-languages": "0.3.1",
     "monaco-typescript": "0.5.0",
     "monaco-css": "1.1.1",
     "monaco-json": "1.0.2",