* Don't initialize site.config['attendease']['data'] unless we need to.
* Merge into site.config['attendease']['data'] what we gather from site.json instead of replace.
Version bump.
Merge pull request #13 from pgib/data-merge

Don't destroy data willy-nilly.
Output our site.json in a pretty format for easier reading by humans.
Version bump.
Merge pull request #14 from pgib/pretty-json

Prettier json output.
Merge remote-tracking branch 'upstream/master' into static-schedule-pages

Conflicts:
	jekyll-attendease.gemspec
	lib/jekyll-attendease.rb