Added some editing keybindings

* Autocomplete filename
* goto file

.vim/vim-keys-help.md

@@ -43,7 +43,12 @@ A cheat sheet for my vim customizations
 * `<leader>f`               - open FZF files
 * `<leader>b`               - open FZF buffers 
 
-## Text bubbling (http://vimcasts.org/episodes/bubbling-text/)
+## Editing
+
+* <ctrl-x><ctrl-f>        - autocomplete filename (insert mode)
+* gf                      - go to file (if exists) (normal mode)
+
+## [Text bubbling](http://vimcasts.org/episodes/bubbling-text/)
 
 After text selection (`<ctrl-v>`)
 
@@ -62,3 +67,4 @@ pre-made files inserted from `.vim/templates`
 * `,sh`                     - insert shell header
 * `,md`                     - insert markdown header
 * `,ban`                    - insert ASCII banner
+