resolves #594 added template to README for 0-1-4

- mentioned DocBook 5 backend in intro
- simplified OS and system requirements sections
- removed AsciiDoc vs Asciidoctor section
- added links to docs
- added IRC link
- added news link
- updated link refs in header
- split install and upgrade sections
- adjusted Rubinius version
- replaced resources section with expanded help section
- I'm a commit message monster in vim!

Next actions and issues:

1. For the configuration section, is there missing configuration information? Like, what about other sub-projects of Asciidoctor that require Tilt?
2. Update the test number in the install section.
3. Provide a link to the test suite at the end of the Ruby API section.
4. Embed the Changelog once it is finalized
5. Update usage instructions regarding DocBook 5 if necessary

And yes, I cut, copied, and pasted sections around like a jitterbug, so the diff looks like a massacre occurring simultaneously in multiple, parallel realities :tropical_drink: