feat: replace protocol-buffers with protons

Ref ipfs/js-ipfs#991

.gitignore

@@ -40,3 +40,4 @@ test/test-data/go-ipfs-repo/LOG.old
 
 # while testing npm5
 package-lock.json
+yarn.lock

package.json

@@ -55,7 +55,7 @@
     "peer-id": "~0.10.0",
     "peer-info": "~0.11.0",
     "priorityqueue": "^0.2.0",
-    "protocol-buffers": "^3.2.1",
+    "protons": "^1.0.0",
     "pull-length-prefixed": "^1.3.0",
     "pull-stream": "^3.6.0",
     "safe-buffer": "^5.1.1",
@@ -83,4 +83,4 @@
     "Friedel Ziegelmayer <dignifiedquire@gmail.com>",
     "Pedro Teixeira <i@pgte.me>"
   ]
-}
+}

src/message/index.js

@@ -3,10 +3,10 @@
 const assert = require('assert')
 const PeerInfo = require('peer-info')
 const PeerId = require('peer-id')
-const protobuf = require('protocol-buffers')
+const protons = require('protons')
 const Record = require('libp2p-record').Record
 
-const pbm = protobuf(require('./dht.proto'))
+const pbm = protons(require('./dht.proto'))
 
 const MESSAGE_TYPE = pbm.Message.MessageType
 const CONNECTION_TYPE = pbm.Message.ConnectionType