Add .ruby-version and .ruby-gemset to .gitignore
add refute_selector as alias of assert_no_selector
Merge pull request #1234 from gregmolnar/refute

add refute_selector as alias of assert_no_selector
Merge pull request #1233 from abotalov/add_ruby_version_to_gitignore

Add .ruby-version and .ruby-gemset to .gitignore