package: remove crypto-browserify specific version

package.json

@@ -44,19 +44,15 @@
     "type": "git",
     "url": "https://github.com/bitcoinjs/bitcoinjs-lib.git"
   },
-  "browser": {
-    "crypto": "crypto-browserify"
-  },
   "dependencies": {
     "bigi": "^1.4.0",
-    "bs58check": "1.0.3",
-    "crypto-browserify": "^3.9.0",
-    "ecurve": "1.0.0",
-    "typeforce": "0.1.0"
+    "bs58check": "^1.0.4",
+    "ecurve": "^1.0.0",
+    "typeforce": "^0.1.0"
   },
   "devDependencies": {
     "async": "^0.9.0",
-    "browserify": "^8.0.3",
+    "browserify": "^8.1.0",
     "bs58": "^2.0.1",
     "cb-helloblock": "^0.4.10",
     "coveralls": "^2.11.2",