Merge pull request #23 from ipfs/greenkeeper-ipfs-blocks-0.1.2

ipfs-blocks@0.1.2 breaks build ⚠️

Author: daviddias

package.json

@@ -60,7 +60,7 @@
     "async": "^1.5.2",
     "block-stream2": "^1.1.0",
     "debug": "^2.2.0",
-    "ipfs-blocks": "^0.1.0",
+    "ipfs-blocks": "^0.1.2",
     "ipfs-merkle-dag": "^0.3.0",
     "ipfs-unixfs": "^0.1.0",
     "through2": "^2.0.0"