Add setup guide for serving locally

[jonmaddock]

Closes #4. Adding a guide to setup for serving the site locally for previewing changes.

[jonmaddock]

@jholloc can you let me know if these steps work for you?

[jonmaddock]

@jholloc could you review this please?

[jholloc]

@jholloc could you review this please?

We need to add "webrick" to the Gemfile to make it work on newer versions of ruby, otherwise it worked fine.

[jonmaddock]

@jholloc I'm guessing this is your problem: github/pages-gem#752. One of the solutions suggested is to add:

ruby versions["ruby"]

to the Gemfile; apparently this tells bundler to use the ruby version used by github-pages. This might be a more complete solution than the webrick one, if anything else breaks again, or until this problem is fixed by Github Pages. Can you try this out and add the line to the Gemfile if it works?

[jonmaddock]

Also, was jekyll installed using the steps in these instructions (I think bundle install installs it as a dependency), or did you have to install it separately? I should add it as a step if not.

[jonmaddock]

Also, was jekyll installed using the steps in these instructions (I think bundle install installs it as a dependency), or did you have to install it separately? I should add it as a step if not.

jekyll was installed by bundler as a dependency, so it isn't required as a separate step.

[jonmaddock]

Added webrick dependency for later Ruby versions.

Have run through instructions from scratch and they appear to work fine.