fix(aegir): fallback to version 6.0.0

Author: daviddias

package.json

@@ -44,7 +44,7 @@
     "url": "https://github.com/ipfs/js-ipfs-api"
   },
   "devDependencies": {
-    "aegir": "^7.0.0",
+    "aegir": "^6.0.0",
     "chai": "^3.5.0",
     "gulp": "^3.9.1",
     "hapi": "^14.1.0",