Add w!! command to force sudo writing

vimrc

@@ -146,8 +146,8 @@ inoremap jj <Esc>
 "[To move over parenthesis, brackets, quotes in insert-mode]"
 inoremap kk <Right>
 inoremap hh <Left>
-"[Easy omni-completion with Ctrl-Space]"
+" http://stackoverflow.com/questions/1005/getting-root-permissions-on-a-file-inside-of-vi
-"inoremap <C-Space> <C-X><C-O>
+cmap w!! w !sudo tee >/dev/null %
 "[To disable the arrow keys]"
 for prefix in ['i', 'n', 'v']
     for key in ['<Up>', '<Down>', '<Left>', '<Right>']