strip evil whitespace

Signed-off-by: Tyler Pickett <t.pickett66@gmail.com>
update gem source in Gemfile

Signed-off-by: Tyler Pickett <t.pickett66@gmail.com>
Fix rakefile from changes to rdoc breaking it

Signed-off-by: Tyler Pickett <t.pickett66@gmail.com>
add timecop to test setup

Signed-off-by: Tyler Pickett <t.pickett66@gmail.com>
add Quarter.next

Signed-off-by: Tyler Pickett <t.pickett66@gmail.com>
add Quarter.previous

Signed-off-by: Tyler Pickett <t.pickett66@gmail.com>
Merge pull request #3 from evizitei/add-next-class-method

Add next class method