Added a client_version string to desired_capabilities
Added a tool list to config.
Allowed for tools to be added to the list
Merging changes from master
Added Capybara 2.1.x as a dev dependency
Added Capybara 2.1.x build for Travis
Rspec excludes tagged tests based on version ranges
Capybara 2.1.x finder support added
Proper relative path for gemspec
Include tools once only
Added current_url to selenium driver to avoid stack overflow when current_url called on driver
Update README.markdown

Added new tagging details to RSpec 2 details.
Removed add_tool
Included tool guessing
Merge from upstream