edit vim

vim/navigate.md

@@ -30,6 +30,11 @@ Go to the last and previous places you've changed:
 
 > g,
 
+Go to a filename, and type `gf` (Go-to-File).
+For example, if you put your cursor over the `~/.vimrc` in this line, you can edit your vim configuration file.
+
+`source ~/.vimrc`
+
 # Project Structure
 
 Make a 20 character 'visual split' in the current working directory ('`.`').