Cleaned up local Gemfile
I removed the group parts since it prevents using them when building non-
Rails stuff and isn't need locally anyways.  I put in a Ruby 2 guard for
gems that are Ruby 2 only.  I also removed some of the gems I never use.
Made my binding.pry shortcut easier to hit
Switched to mixed line numbers in Vim. So friggin' awesome.
Added a few gems
Added pry-debugger for pre-2.0 debugging, adding guard ctags
gem for rebuilding ctags on the fly, uncommented binding of
caller, added looksee for inspecting stuff (From the rogues)
and added benchmark-ips for per second benchmarking.