Changes to allow tests to run.

Require Sauce::Utilities in cucumber integration
Disable Sauce::Connect for cucumber-capybara test
Version bump
correct URL
fixed weird indentation
Make Parallisation the default for the README

Tore apart the existing readme, and there was a wailing and a gnashing of teeth.

Added installation details which assume the use of the rake tasks.
Added details of which Webdriver objects were available where.
Added links to Configuration and Parallelization guide.
Merge branch 'master' of github.com:sauce-labs/sauce_ruby
Exit with exit code 1 if any subtest errors