Fixing grammar in documentation
Disable lazy loading in Cacher

-Addresses #422
-Set Chef::Config[:no_lazy_load] to true in ChefSpec::Cacher
-Add unit test to confirm Cacher disables lazy loading
-Add example to server (#422 requires server and cacher)
Move no_lazy_load from Cacher to Runner
Upgrade to RSpec 3
Bump minimum Chef version to 11.12

There are bugs in Chef Zero and other requirements that basically force
ChefSpec to use a newer version of Chef. Sorry folks - there's nothing I can
do about it.
Upgrade Chef Zero interfaces and add support for multi-org
Use a randomly assigned port for Chef Zero
Way to be an asshole FreeBSD. Thanks...
Do not pass local file path to `preferred_filename_on_disk_location`
Remove .stub from README [ci skip]
Version bump v4.0.0