diff --git a/.gitignore b/.gitignore
index c2658d7..43fee9d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 node_modules/
+output.js
diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..a84bb40
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,5 @@
+`npm install -g grunt-cli`
+`npm install`
+`grunt browserify`
+
+read the output file. Line 4 should look like this `var __extends = undefined.__extends `