Dropping support for Node < 4 (#32)

* Removed object-assign polypill
* According to http://node.green string#repeat is fine in v4
* removed repeat

index.js

@@ -1,5 +1,3 @@
-var assign = require('object-assign');
-var repeat = require('repeat-string');
 var getPort = require('getport');
 var getOptions = require('./lib/options');
 
@@ -10,7 +8,7 @@ var LOG_LEVEL_INFO = 3;
 
 module.exports = function(argv) {
   var SocketCluster = require('socketcluster').SocketCluster;
-  var options = assign(getOptions(argv), {
+  var options = Object.assign(getOptions(argv), {
     workerController: __dirname + '/lib/worker.js',
     allowClientPublish: false
   });
@@ -33,7 +31,7 @@ module.exports = function(argv) {
       } else {
         if (logLevel >= LOG_LEVEL_INFO) {
           console.log('[RemoteDev] Start server...');
-          console.log(repeat('-', 80) + '\n');
+          console.log('-'.repeat(80) + '\n');
         }
         resolve(new SocketCluster(options));
       }

package.json

@@ -21,6 +21,9 @@
     "devtools",
     "remotedev"
   ],
+  "engines" : {
+    "node" : ">=4.0.0"
+  },
   "author": "Mihail Diordiev <zalmoxisus@gmail.com> (https://github.com/zalmoxisus)",
   "license": "MIT",
   "bugs": {
@@ -43,8 +46,6 @@
     "minimist": "^1.2.0",
     "morgan": "^1.7.0",
     "node-uuid": "^1.4.0",
-    "object-assign": "^4.0.0",
-    "repeat-string": "^1.5.4",
     "semver": "^5.3.0",
     "socketcluster": "^5.0.4",
     "sqlite3": "^3.1.8"