Check if the folder already exists before adding to gitignore.
Fixed test.
Added mockery.
Fixed node_modules path.
Merge pull request #31 from sumardi/fix/duplicate-folder-in-gitignore

Fixes duplicate folder in gitignore
Merge pull request #32 from sumardi/fix/add-missing-mockery

Add mockery.
Update config.php to remove null from bower
Merge pull request #33 from sumardi/fix/node-modules-path

Fixed node_modules path.