Tests with 'python setup.py test'

  - Add config to be possible configuration run tests
    using the command 'python setup.py test'
Add ghostdriver.log on gitignore
Merge pull request #10 from robsonpeixoto/gitignore

Add ghostdriver.log on gitignore
Merge pull request #9 from robsonpeixoto/test-on-setuppy

Tests with 'python setup.py test'
Implements the `browser.get_iframe` splinter method.
Implements the `browser.attach_file` splinter method.
Adds new methods in the base browser drive interface
Merge pull request #11 from Helielson/master

Implements splinter methods.