No help of how to install and use

Information, tutorial and examples are missing on how to install and use parallel_cucumber

It seems that this conflicts as an executable name with `parallel_cucumber` being used from this repo: https://github.com/grosser/parallel_tests

One important explanation is how to support both or what needs to be done to avoid any conflicts and be able to swap between the two.

Many thanks

Start by checking how parallel_cucumber is installed and invoked, then compare its parallel_cucumber executable with the parallel_tests command named in the issue. Document installation, usage, examples, and how users can avoid or handle the naming conflict; done when a newcomer can install and switch between them.

Written by the indexing model from the issue text.