Merge pull request #14 from feross/greenkeeper/airtap-2.0.3

chore(package): update airtap to version 2.0.3

Author: feross

package.json

@@ -12,7 +12,7 @@
     "url": "https://github.com/feross/arch/issues"
   },
   "devDependencies": {
-    "airtap": "0.1.0",
+    "airtap": "^2.0.3",
     "standard": "*",
     "tape": "^4.0.0"
   },