Changed keybinding for FZF paste

Press <ctrl>-p to paste the filename of the file selected by FZF

.vimrc

@@ -174,7 +174,7 @@ let g:airline_theme = 'angr'
 let g:fzf_action = {
   \ 'ctrl-x': 'split',
   \ 'ctrl-v': 'vsplit',
-  \ 'ctrl-o': ':r !echo'}
+  \ 'ctrl-p': ':r !echo'}
 
 " ---------------------------------------------------------------------------------------------------------------------
 " ==> Colors