Git pull starts vim

What to do if git pull starts vim?

You're in the text editor, vim! It's a modal text editor, so you would need to:

• Press i to enter insert mode.
• Now you can type your message, as if you were in a normal (non-modal) text editor.
• Press esc to go back to command mode.
• Then type :w followed by enter to save.
• Finally :q followed by enter to quit.

Thanks http://stackoverflow.com/questions/14046122/github-locks-up-mac-terminal-when-using-pull-command