(meta) Updates assert in Browserify

We can move back to npm's browserify when browserify/browserify#1611 is merged

package.json

@@ -43,7 +43,7 @@
     "babel-polyfill": "^6.13.0",
     "babel-preset-es2015": "^6.3.13",
     "babel-runtime": "^6.11.6",
-    "browserify": "^13.1.0",
+    "browserify": "github:robotlolita/node-browserify#patch/assert",
     "es5-shim": "^4.5.9",
     "es6-shim": "^0.35.1",
     "eslint": "^2.7.0",