destructuring doesnt work, but works natively in my chrome browser

I was trying to execute

```js
var demoCA = require('demo-ca')
var element = demoCA({ theme: { color: 'yellow' } })
document.body.appendChild(element)
```
in [requirebin.com](http://requirebin.com) and it seems that might be related to `wzrd.in`?

```
Bundling error:

---FLAGRANT SYSTEM ERROR---

--- error #0: ---

(logs uuid: 01b53e40-b6e5-11e6-9e69-517afb79b957 )

Error: "browserify exited with code 1"

code: 1
stderr: ReferenceError: Invalid left-hand side in assignment
at module.exports (/home/admin/browserify-cdn/node_modules/browserify/node_modules/syntax-error/index.js:13:52)
at DestroyableTransform._transform (/home/admin/browserify-cdn/node_modules/browserify/index.js:583:19)
at DestroyableTransform.Transform._read (/home/admin/browserify-cdn/node_modules/browserify/node_modules/readable-stream/lib/_stream_transform.js:184:10)
at DestroyableTransform.Transform._write (/home/admin/browserify-cdn/node_modules/browserify/node_modules/readable-stream/lib/_stream_transform.js:172:12)
at Labeled.Pipeline._write (/home/admin/browserify-cdn/node_modules/browserify/node_modules/labeled-stream-splicer/node_modules/stream-splicer/index.js:73:22)
at doWrite (/home/admin/browserify-cdn/node_modules/browserify/node_modules/readable-stream/lib/_stream_writable.js:279:12)
at writeOrBuffer (/home/admin/browserify-cdn/node_modules/browserify/node_modules/readable-stream/lib/_stream_writable.js:266:5)
at Labeled.Writable.write (/home/admin/browserify-cdn/node_modules/browserify/node_modules/readable-stream/lib/_stream_writable.js:211:11)
at Labeled.ondata (/home/admin/browserify-cdn/node_modules/browserify/node_modules/readable-stream/lib/_stream_readable.js:572:20)
at emitOne (events.js:77:13)

dirPath: /tmp/demo-ca1161030-16116-14oh3o5

------

This is probably an issue with the package, and not browserify-cdn itself.
If you feel differently, feel free to file a bug report at:

https://github.com/jfhbrook/browserify-cdn/issues

Include the ENTIRETY of the contents of this message, and the maintainer(s)
can try to help you out.

Have a nice day!
```