Adding asset server support with base tag approach
Added a spec for default case
Make click_link support :href option
Merge pull request #963 from abotalov/support_for_href_by_click_link

Support for :href by click_link
Merge branch 'asset_server' of git://github.com/sdhull/capybara into sdhull-asset_server

Conflicts:
	lib/capybara.rb
Pull base tag injection into a helper
Make sure we don't accidentally modify the body

Since we don't know where it comes from in the driver. Related to #958
test for issue #686
fix for within_frame issue #686
Add options for click_link_or_button
Spec for link :exact option
Add options for click_button
Add options for fill_in
Add options to `choose`
Add options to `check`
Add options to `uncheck`
Add options to `select`
Send through options to unselect
Add options to attach_file
Make redcarpet a dependency

Because apparently yard needs it, but doesn't depend on it. Yay?