react_on_rails 8.0.2 is NOT compatible with ruby 2.1

[alainbloch]

In lib/react_on_rails/prerender_error.rb lies the new squiggly heredoc syntax. This is only available in ruby 2.3 and above, and will throw an exception if ran on ruby 2.1

[justin808]

Fixing in #867.

Rubocop -a did that!

[justin808]

@alainbloch I think that rubocop may have done that...Please confirm 8.0.3 fixes the issues.

[justin808]

#867 was merged.