feat: replace protocol-buffers with protons

Ref ipfs/js-ipfs#991

Author: dignifiedquire

.gitignore

@@ -33,3 +33,6 @@ node_modules
 .node_repl_history
 
 dist
+
+package-lock.js
+yarn.lock

.travis.yml

@@ -3,7 +3,6 @@ language: node_js
 
 matrix:
   include:
-  - node_js: 4
     env: CXX=g++-4.8
   - node_js: 6
     env:

package.json

@@ -15,7 +15,7 @@
     "release": "aegir release",
     "release-minor": "aegir release --type minor",
     "release-major": "aegir release --type major",
-    "coverage": "aegir coverage --ignore src/unixfs.proto.js"
+    "coverage": "aegir coverage"
   },
   "repository": {
     "type": "git",
@@ -30,7 +30,7 @@
     "url": "https://github.com/ipfs/js-ipfs-unixfs/issues"
   },
   "engines": {
-    "node": ">=4.0.0",
+    "node": ">=6.0.0",
     "npm": ">=3.0.0"
   },
   "homepage": "https://github.com/ipfs/js-ipfs-unixfs#readme",
@@ -42,7 +42,7 @@
     "safe-buffer": "^5.1.1"
   },
   "dependencies": {
-    "protocol-buffers": "^3.2.1"
+    "protons": "^1.0.0"
   },
   "pre-commit": [
     "lint",

src/index.js

@@ -1,7 +1,7 @@
 'use strict'
 
-const protobuf = require('protocol-buffers')
-const pb = protobuf(require('./unixfs.proto'))
+const protons = require('protons')
+const pb = protons(require('./unixfs.proto'))
 // encode/decode
 const unixfsData = pb.Data
 // const unixfsMetadata = pb.MetaData // encode/decode