Fix default key.
Move <C-d> from CursorMove to Delete module
Merge pull request #13 from haya14busa/fix/module_pos

Move <C-d> from CursorMove to Delete module
Fix default keys/
Modify <C-f> to <Right> at BufferComplete module
Modify <Tab> to <Over>

*Buffer* completion key mapping doesn't exist on command line
Merge pull request #14 from haya14busa/fix/default_key

Fix/default key
Remove backslash.
Add <BS> on Cancel module
Merge pull request #15 from haya14busa/fix/default_key

Add <BS> on Cancel module
Fix backslash.