Improve rake task description when creating new branch

[benoittgt]

Hello

I think the task need a little bit more help when you want to create a new branch. I was stuck and refers to #43 (comment) to find the right command.

[JonRowe]

I don't use these but makes sense to me!

[benoittgt]

Thanks @JonRowe for the review. I was not using this task too... before today.

I am very curious about your way to develop on RSpec especially on multiple lib at the same time. There is a few automated tasks within the Rakefile, I see also some configuration possible within Gemfile or RSpec libs. But I don't see any clear documentation on how to or best practices. 🙂

branch = File.read(File.expand_path("../maintenance-branch", __FILE__)).chomp
%w[rspec rspec-core rspec-expectations rspec-support].each do |lib|
  library_path = File.expand_path("../../#{lib}", __FILE__)
  if File.exist?(library_path) && !ENV['USE_GIT_REPOS']
    gem lib, :path => library_path
  else
    gem lib, :git => "https://github.com/rspec/#{lib}.git", :branch => branch
  end
end

Thanks in advance