Factor string generation out of print functions
Factor out heading printing  (for markdown)
Let string creation functions return lists of strings
Factor out section printing (for use with markdown)
Add --markdown option to command line
Add option to print title
Print yaml header with markdown output
Change --markdown option to --gh-pages

It's not really pure markdown and is really used for github pages so let's say
so.
Add travis config
Update travis scripts
Use correct command line options
Print ladder before games
Change markdown to remove dep on redcarpet
Merge pull request #13 from simonjbeaumont/master

Push results to webpage automagically
Allow empty commits to gh-pages branch
Allow robhoes travis acc to push to simonjbeaumont gh-pages
added dates of games
Merge branch 'master' of github.com:robhoes/elo-ladder
add re to required opam packages
use a space rather than a comma