Rewrite the README!
Rewrite the README!

While Capistrano does have official documentation on its website, I feel that
we still need a comprehensive README. (In fact, the website instructs readers to
read the README first.)

My goal here was to do a better job of explaining what exactly Capistrano is,
why you should use it (there are many options out there for deployment
automation, after all), and also importantly, what Capistrano does *not* do.

I also tried to make a more helpful "documentation and help" section, and I
removed contribution and testing instructions that are better covered in the new
CONTRIBUTION and DEVELOPMENT docs.

Finally, I removed the section about "Validation of variables", which seemed out
of place in the README. I think this is more appropriate for the documentation
website, since it is a pretty low-level feature.

jdelStrother/capistrano,kirs/capistrano,harrykiselev/capistrano,ngpestelos/capistrano,maliqq/capistrano,capistrano/capistrano,kylerippey/capistrano,kylerippey/capistrano,capistrano/capistrano,harrykiselev/capistrano,ngpestelos/capistrano,kirs/capistrano,maliqq/capistrano,jdelStrother/capistrano