Setup Q&A Plugin on new subdomain

I am not sure, but you have to install wordpress in subdomain, then only you can install this plugin.
By the way, nice cloning of Mashable.

Thanks for the answer @Ankush !
As long as you have WordPress for your site and sub-domain, the plugin should work.
Please try and let us know the results.
Cheers

i also want to setup a custom question and answers to my site http://www.techdroop.com