No functional change. Alphabetizing dependencies for ease of maintenance.
Getting "bundle console" working.
We weren't pulling in ActiveSupport. Also added a dependency on pry, since I
prefer it over plain irb for console work.
Getting logging working for non-rails projects.
Was getting this message when uncommenting debug messages:
  NameError: uninitialized constant Logger
Adding the ability to encrypt Mongoid Hash fields.
Added some documentation for the methods that will make it easier for others to
reverse-engineer what was going on. In particular, the reliance on #to_s was
undocumented. It would be nice to be able to plug-in an alternative (I had
intended on using #to_yaml instead of #to_s).
Note the use of eval should be fine, since the string is generated from
Hash#to_s, and not from user input.