Append neosnippet_source action to action_table.
Merge pull request #178 from alpaca-tc/master

Append neosnippet_source to action_table.
- Deleted snoremap.
- Fixed #180 select default.
Changed behavior of b:undo_ftplugin
Merge pull request #182 from alpaca-tc/changed_behavior_of_bundo_ftplugin

Changed behavior of b:undo_ftplugin