Rename cleanContainerForRefresh to destroy and add resize event cleaning
Document #destroy
Merge pull request #45 from bbakersmith/destroy

Rename cleanContainerForRefresh to destroy
Refresh uses current contents if microfiche no longer contains a .microfiche-screen element
Move content handling logic out of #refresh.
Merge pull request #44 from withassociates/better-resize

Refresh uses current contents if changed
v1.7.0