add back and forward methods to the selenium driver
Merge pull request #1172 from nashby/back-forward

add back and forward methods to the selenium driver
fix method names in exception
Merge pull request #1182 from nashby/fix-method-names

fix method names in exception
Delegate index and values_at from Capybara::Result
Remove note about within matching first element

I think it can be just removed as it's said in section about :match
Merge pull request #1184 from abotalov/fix_readme

Remove note about within matching first element
Merge pull request #1183 from abotalov/delegate_two_methods_from_result

Delegate index and values_at from Capybara::Result