Copyright year in readme
Add gittip button
Returns jQuery object from calls to enable, disable, and destroy
Merge pull request #244 from robharper/fix/return-jquery

Make calls to enable, disable, and destroy chainable
Stop storing waypoint id references in jQuery data, fixes #243
Version bump to 2.0.4
Merge branch 'master' into gh-pages
Version bump to 2.0.4