Update pathogen call -> execute

Signed-off-by: Kare Nuorteva <kare.nuorteva@me.com>
Add Python config for Vim

Signed-off-by: Kare Nuorteva <kare.nuorteva@me.com>
Add script for creating Git tags

Signed-off-by: Kare Nuorteva <kare.nuorteva@me.com>
Improvements for create-tag

    * Improve usage message
    * Sanity check first char of version string is 'v'

Signed-off-by: Kare Nuorteva <kare.nuorteva@me.com>