Ruby HTML generation scripts require a handful of gems

[gregoryfoster]

Hello, and thanks again for building the legis-graph suite of projects. I'm starting to look at this one as I love the teaching/learning potential of in-Neo4j-browser guides.

I'm a user of rvm named gemsets so I noticed that this project requires the following gems to generate the HTML documents from the AsciiDocs:

• asciidoctor
• tilt
• thread_safe (optional)

I'm out of practice with Ruby, so I'm not sure the best approach to specify gem requirements in a project. I can share my gemset export from rvm, which can then be consumed by rvm users or referenced in documentation.

There are other gems required to run the guide localhost server via Ruby, but I ran into some problems with that route I'll detail separately.