Updating dependencies

Author: JedWatson

package.json

@@ -13,7 +13,7 @@
     "url": "https://github.com/JedWatson/react-codemirror/issues"
   },
   "dependencies": {
-    "classnames": "^2.1.1",
+    "classnames": "^2.1.2",
     "codemirror": "^5.3.0",
     "react": "^0.13.3"
   },