Disable linting for files matching pattern

[kokarn]

First of all, thanks a bunch for a great plugin. Works wonders.

The only real problem I've found is when you on occasion try to view a minified and/or compressed file to make sure something works as expected or whatever.

Linter will of course try to lint this file as well and it will of course find a lot of errors.
This is usually not a problem but with some files, this makes it impossible to view them (such as minified css). There will be so many errors on that line that the editor gets completly bogged down and unresponsive.

The easiest way to fix this would be to allow filters on what files should be linted, similar to that of #13 but more general.

Say *.min.* would be a desired filter.

Thoughts? Suggestions?