Remove ESC in airline shortcut to remove alarm.

Signed-off-by: apporc <appleorchard2000@gmail.com>
Add more plugins

Use vimfiler instead of nerdtree
Use vimshell instead of conque-shell
Use neocomplete instead of YouCompleteMe

Add echodoc, MatchTagAlways, neosnippet

Change configuration options for plugins above.

Change style of configuring plugins in neobundle.

Signed-off-by: apporc <appleorchard2000@gmail.com>
Clear trailing spaces.

Use F9 to clear trailing characters.

Signed-off-by: apporc <appleorchard2000@gmail.com>
cmdheight=2 for echodoc

Signed-off-by: apporc <appleorchard2000@gmail.com>