Add a basic setup for YAML files.
Use a hash (#) instead of a semicolon as the comment character.
Merge branch 'change-gitconfig-commentchar' of https://github.com/jszakmeister/vimfiles
user/jszakmeister: tweak the scrolling behavior.
user/jszakmeister: add some autocmds for email and vcs buffers.
user/jszakmeister: customize settings slightly for Ant build.xml files