update is-ipfs dep to v0.2.0

Author: nginnever

package.json

@@ -24,7 +24,7 @@
   },
   "dependencies": {
     "ipfs-blocks": "^0.1.0",
-    "is-ipfs": "github:nginnever/is-ipfs.git#0ca3ad3c10e4dfb549f0ca70824a9bb07ea6777b",
+    "is-ipfs": "^0.2.0",
     "multihashing": "^0.2.0",
     "protocol-buffers": "^3.1.4",
     "stable": "^0.1.5"

src/dag-service.js

@@ -1,6 +1,6 @@
 const DAGNode = require('./dag-node').DAGNode
 const Block = require('ipfs-blocks').Block
-const isIPFS = require('../node_modules/is-ipfs/src/index')
+const isIPFS = require('is-ipfs')
 const base58 = require('bs58')
 
 exports = module.exports = DAGService