Correct scoping issue with rack usage detection.
Offer a way to reload the Jekyllplus configuration.
Remove trailing spaces, unused variables, and fix Syntastic complaints.
Update to use Guard 2.0
Start Rack in a thread instead of a process.

Using a thread prevents a rogue Rack process from continuing to
run after Guard crashes.
Remove dead code and reference to private method.
Merge branch 'master' of https://github.com/awood/guard-jekyll-plus

Conflicts:
	guard-jekyll-plus.gemspec