Merge pull request #1645 from ipfs/hotfix/godeps-pb

fix import path of generated proto files

unixfs/pb/unixfs.pb.go

@@ -14,7 +14,7 @@ It has these top-level messages:
 */
 package unixfs_pb
 
-import proto "github.com/gogo/protobuf/proto"
+import proto "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/gogo/protobuf/proto"
 import math "math"
 
 // Reference imports to suppress errors if they are not otherwise used.