update changelog
merge bundler gem style
remove version gem, use gem-release replace it.
Merge branch 'bundler_gem_style'
remove app_setting_loader, use fume-settable instead of it.
add rspec gem
add combustion gem
add Fume::RailsExt::ControllerExtensions spec test
add Fume::RailsExt::HelperExtensions spec test
add simple render_cache spec test
update gemspec description
add travis-ci config file
Merge branch 'integration_rspec'