Move install script to bin/install-node.js

bin/install-node.js

@@ -0,0 +1,17 @@
+var binary = require('node-binary');
+var nodeVersion = 'v0.12.0';
+
+console.log('Downloading node-' + nodeVersion + '-' + process.platform + '-' + process.arch);
+
+binary.download({
+	os: process.platform,
+	arch: process.arch,
+	version: nodeVersion
+}, './bin/node', function(error, binaryPath) {
+	if(error) {
+		console.error(error.message);
+		process.exit(1);
+	}
+
+	console.log('NodeJS was downloaded to ' + binaryPath);
+});

package.json

@@ -19,7 +19,7 @@
   "scripts": {
     "prepublish": "gulp build",
     "test": "gult test",
-    "install": "node-binary download v0.12.0 ./bin/node --arch `node -e 'console.log(process.arch)'` --os `node -e 'console.log(process.platform)'`"
+    "install": "node bin/install-node.js"
   },
   "keywords": [
     "resin",