Update .vimrc

I don't want trailing spaces in my sql :-)
 added check for override_spf13_bundles in vimrc
Fixed edit shortcuts for paths containing spaces

This is the current implementation on http://vimcasts.org/e/14 
The original one would not work for paths containing spaces or other strange characters.
Remove traillings
Updated readme section on windows spf13-vim installation
Added prompt for Chocolatey install example and fixed package link
Merge pull request #700 from switchspan/3.0

Updated windows install information in README
Merge pull request #698 from leowzukw/patch-2

Remove traillings
Merge pull request #687 from edi9999/patch-1

Update .vimrc
Merge pull request #689 from drake01/3.0

 added check for override_spf13_bundles in vimrc
Merge pull request #697 from regedor/3.0

Fixed edit shortcuts for paths containing spaces