Create group.rb

Adds group component to API
Update group.rb

Raise exception if we don't receive the required param for find
Update mbsy.rb

Add to required files.
Adds 'RecordNotFound' error

Also added 'debugger' as a dependency, and made tests pass.
Update mbsy.gemspec

Update version
Update date
Add version to debugger
Merge pull request #2 from chaselee/patch-1

Update mbsy.gemspec
Merge pull request #4 from wellnessfx/passing_tests

Adds many things