Skip compinit's security checking

Annoying when switching to root in the shell
Switch to Impromptu for my prompt
vim: Don't limit window dimensions
vim: always show status bar
vim: no need to force all text files to 72

We will define that for the types we care about.
vim: HTML/RTF export settings
vim: Experiment with semi-colon pinky leader
vim: set indent to 2 spaces for few file formats
vim: add a command to generate markdown
vim: currently not using snipmate