Fix warning: The source :rubygems is deprecated because HTTP requests are insecure.
Fix warning: The source :rubygems is deprecated because HTTP requests are insecure.

seanwalbran/simplecov-html,Kriechi/simplecov-html,seanwalbran/simplecov-html,colszowka/simplecov-html,envato/simplecov-html,varyform/simplecov-html,Kriechi/simplecov-html,colszowka/simplecov-html,colszowka/simplecov-html,varyform/simplecov-html,envato/simplecov-html,rdiazv/simplecov-html,rdiazv/simplecov-html,Kriechi/simplecov-html