koa.io -> plain koa and to socket.io

package.json

@@ -30,7 +30,7 @@
     "koa-prerender": "^1.0.3",
     "koa-route": "^2.4.0",
     "koa-static": "^2.0.0",
-    "koa.io": "0.0.3",
+    "koa": "^1.2.0",
     "mz": "^2.3.1",
     "promised-mongo": "^1.2.0",
     "sitemap": "^1.5.0",

src/server.js

@@ -1,5 +1,5 @@
 import path from 'path';
-import koa from 'koa.io';
+import koa from 'koa';
 import route from 'koa-route';
 import serve from 'koa-static';
 import logger from 'koa-logger';