[Documentation] User guide for import

[rk-teche]

I have found this one of the best extension for multiple search and replace and it actually reduce lot of work load, since I am converting actionscripts to typescript which require lots of find and replace.

I really appreciate that you have created such a generic utility.

I would like to add some user guide for imports functionality, I have figured it out how to use it but it would be helpful for other users also.

Thanks