Add g:auto_save_in_insert_mode option
Add CompleteDone to autosave

This will autosave even w/ plugins like vim-autocomplpop
Add augroup
Bump version up to 0.1.6
Merge branch 'master' of github.com:907th/vim-auto-save into upstreammerge

use the actual vim-auto-save algorithm now, since they also use
insertleave now

Conflicts:
	plugin/AutoSave.vim