Ruby version requirement

[daveseward]

Hey, was just trying to play around with this gem and hit a problem with line 127 in builder.rb:

def wrap_bare_methods(ruby_code)
      wrapped_ruby_code = <<~RUBY
        class BareMethodsClass
          #{ruby_code.source}
        end
      RUBY

Did some digging and it seems that <<~ is a ruby 2.3 thing. I'm running 2.2.10 so it caused a crash for me. Your gem spec lists >= 2.1, so maybe could update this or perhaps change it back to a <<- for old ruby?

[zeisler]

Sorry for the delay could you @daveseward open a PR for this?

[zeisler]

Version 0.16.0 contains is now constrained to equal or greater than ruby version 2.3

[daveseward]

Just saw this - thanks :)