Add envify transform

Author: andreypopp

package.json

@@ -4,7 +4,8 @@
   "description": "Declarative router component for React",
   "main": "index.js",
   "dependencies": {
-    "url-pattern": "~0.4.0"
+    "url-pattern": "~0.4.0",
+    "envify": "^1.2.1"
   },
   "peerDependencies": {
     "react": "~0.9.0",
@@ -18,6 +19,9 @@
     "jshint": "~2.4.3",
     "zuul": "~1.5.2"
   },
+  "browserify": {
+    "transform": ["envify"]
+  },
   "scripts": {
     "test": "make test"
   },