A gem can display ruby methods call stack on browser

Hi guys,

I’m writing a gem monitor these days. The monitor gem can display ruby
methods call stack on browser. It is based on unroller gem, unroller
gem prints methods call stack in console, but it is inconvenient to
read. So I write the monitor gem to print method call stack to
browser.

The repository is: http://github.com/flyerhzm/monitor

And these is a result preview:
http://www.huangzhimin.com/images/monitor.gif

It uses sinatra to send data to browser, and the server uses socket to
communicate with source codes.

It is just an alpha release, any suggestions are welcome.

Thanks,
Richard