Adds ActiveSupport dep and delegation require
Merge pull request #109 from philostler/activesupport_dependency

Adds ActiveSupport dependency and delegation require
Bullet should not automatically require ActiveRecord / Mongoid. Currently Bullet forces these libraries to be required in your application, however, this is not a good practice since many apps many want to intentionally exclude one of these libraries (like mine). Instead, it is better to check if they are already defined (which would have been done earlier in the Rails initialization chain)
Rescue load error to fix Travis CI
Merge pull request #110 from johnnyshields/master

Bullet should not automatically require ActiveRecord / Mongoid
1.9 hash and -> scope for spec/models
use latest 2.0.0
Clean up language in 'Advance' section of README
Merge pull request #112 from tjgrathwell/patch-1

Clean up language in 'Advance' section of README
Adds check in Bullet Rack for nil response body before invoking #empty?
Corrects typo in spec description
Ensures #empty? returns true when body is nil
Merge pull request #116 from philostler/nil_response_body

Nil response body
remove .rvmrc.example
update README
add Gemfile.locks
update latest rails versions
add mongoid support from 2.4 to 3.1
fix Gemfiles in travis
Fix typos