add directory to exclude

[intrepidlemon]

Summary of Problem

There should be a way to add a directory to exclude from the search results.

usecase: I get a lot of results from my .git directory. There should be a way to either exclude all hidden directories from search by default unless explicitly specified, or let me specify that my .git directory should not be included in the search results.

[alok]

let g:nv_ignore_pattern = ['.git', '.*']