Convert `var=${dirname $filename)` to `var="${filename%/*}` in cases where there is no ambiguity.
Make sure that the path in `$BASH_IT` is absolute because this path gets embedded in the template `.bash_profile` file if selected by the user.
add about-plugin metadata
chmod -x plugins
cleanup filenames to standardize on x.plugin.bash format
only plugin files intended to be executable from the command line should
contain a shebang line, and should be a+x.
Doraken
John D Pell
Benjamin Brombach
Erich Smith