[Feature request] Support for Rails 6.0.0

[jarl-dk]

Trying to use composer with Rails 6.0.0 complains with the misleading error message:

https://raw.github.com/RailsApps/rails-composer/master/composer.rb:279:in `apply': Rails 6.0.0 is not supported. Use Rails 4.1 or newer. (StandardError)

[emacielxp]

same problem here with rails 6.0.2.2:

You are using Rails version 6.0.2.2 which is not supported. Use Rails 4.1 or newer.

[louie728]

Same here... :( Rails version 6.0.3 https://raw.github.com/RailsApps/rails-composer/master/composer.rb:279:in apply': Rails 6.0.3 is not supported. Use Rails 4.1 or newer. (StandardError)`

[joaotorres]

Any alternatives until it's supported? :|

[TrindadeF]

the same problem here Rails version 7.0.3 https://raw.github.com/RailsApps/rails-composer/master/composer.rb:279:in apply': Rails 7.0.3 is not supported. Use Rails 4.1 or newer. (StandardError)`