fix(package): update is-ipfs to version 0.3.0 (#134)

https://greenkeeper.io/

Author: greenkeeper[bot]

package.json

@@ -59,7 +59,7 @@
     "ipfs-unixfs": "^0.1.9",
     "ipld-dag-pb": "^0.9.4",
     "ipld-resolver": "^0.4.3",
-    "is-ipfs": "^0.2.1",
+    "is-ipfs": "^0.3.0",
     "lodash": "^4.17.4",
     "multihashes": "^0.3.2",
     "pull-batch": "^1.0.0",