use (slightly) better filenames for slide scripts
unlink slide scripts after use

Avoid leaving the files lying around and polluting ``git status`` or
``.gitignore``.
source the vim script instead of executing it line by line
remove unnecessary uses of exec
only import Styles.hs if it exists
initial commit of readme
Merge pull request #1 from frasertweedale/feature/more-nuts

Feature/more nuts