gets rid of warnings, update to current version

node_modules/c9/package.json

@@ -6,11 +6,11 @@
     "author": "Cloud9 Inc. <info@c9.io>",
 
     "dependencies": {
-        "async": "~0.2.7",
+        "async": "~0.9.0",
         "tmp": "~0.0.20"
     },
 
     "scripts": {
         "test": "for file in *_test.js; do node $file; done"
     }
-}
+}