add `knife bluebox lb list`

shows load balancer application IDs and service IDs.
use fog model rather than hash
clean up README
readme errors
fix gemspec, add tabularize dependency
highline -> tabularize
tabularize is too twee let's go back to highline
bump version
more thorough README
appease GFM
newline between applications for easier reading
Merge pull request #23 from jyotty/load-balancer-list

knife bluebox lb list command