chore: update deps

Author: daviddias

package.json

@@ -51,7 +51,7 @@
     "chai": "^3.5.0",
     "gulp": "^3.9.1",
     "hapi": "^15.0.2",
-    "interface-ipfs-core": "^0.14.5",
+    "interface-ipfs-core": "^0.15.0",
     "ipfsd-ctl": "^0.14.0",
     "pre-commit": "^1.1.3",
     "socket.io": "^1.4.8",