diff --git a/.gitignore b/.gitignore
index 37060d99a216c9..3e35a680be3776 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@ DerivedData
 *.xcuserstate
 
 node_modules
+npm-debug.log
diff --git a/packager/packager.js b/packager/packager.js
index 58f93a587237b8..8eb03ee3dd3a0d 100644
--- a/packager/packager.js
+++ b/packager/packager.js
@@ -26,10 +26,21 @@ var parseCommandLine = require('./parseCommandLine.js');
 var options = parseCommandLine([{
   command: 'port',
   default: 8081,
+}, {
+  command: 'root'
 }]);
 
 if (!options.projectRoots) {
   options.projectRoots = [path.resolve(__dirname, '..')];
+  if(options.root) {
+    if('string' === typeof options.root) {
+      options.projectRoots.push(path.resolve(options.root))
+    } else {
+      options.root.forEach(function(root) {
+        options.projectRoots.push(path.resolve(root));
+      });
+    }
+  }
 }
 
 console.log('\n' +
diff --git a/packager/packager.sh b/packager/packager.sh
index 94cc71710eb36c..98e4218423ea39 100755
--- a/packager/packager.sh
+++ b/packager/packager.sh
@@ -3,4 +3,4 @@
 ulimit -n 4096
 
 THIS_DIR=$(dirname "$0")
-node $THIS_DIR/packager.js
+node $THIS_DIR/packager.js "$@"