added more `just in case` event removal functions, added unit test files
Move click event to Events section
Make "size" property full string, update documentation
Update size documentation for drop-button
Merge pull request #123 from joshforisha/button-sizes

Improve button size options
Merge branch 'develop' of github.com:softlayer/sl-ember-components into remove-event-listeners-#27
added comments, changed removal to observe willClearRender
updated comments
Merge pull request #125 from mattmarcum/remove-event-listeners-#27

Remove event listeners #27