Ignore gitignore files

[dylan-chong]

It would be nice to support this feature .

Also , interestingly ag ignores gitignored files, when running from the terminal, not from running easy grep

[dylan-chong]

Also , interestingly ag ignores gitignored files, when running from the terminal, not from running easy grep

The same thing with rg. This is vaguely related to issue #53