[dist] Include docco module as a dev dependency

Author: olauzon

package.json

@@ -20,7 +20,8 @@
   },
   "devDependencies": {
     "vows": ">= 0.5.x",
-    "socket.io": ">= 0.6.x"
+    "socket.io": ">= 0.6.x",
+    "docco": ">= 0.3.x"
   },
   "main": "./lib/node-http-proxy",
   "bin": { "node-http-proxy": "./bin/node-http-proxy" },