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.
cite about-plugin metadata. This could be retrieved later, say by an
install script or other helper function, with:
cat ~/.bash_it/plugins/enabled/base.plugin.bash | metafor about-plugin
In this way, summaries of each plugin may be provided to give newcomers
(like me!) an overview.
also, rewrote plugins-help(), which didn't work very well on my system.
It now dynamically queries composure metadata.
This allows users to disable a plugin without completely removing it.
Instead, they simply remove the `plugins/enabled/*.bash` file for the
plugin they want to disable. This continues the concept of "everything
on" while providing greater flexibility to future users.
It might be a good idea to allow turning these off by default in the
future and allowing not only the `plugins/enabled/*.bash` files but also
an array of `<plugin_name>` values that would search for
`plugins/available/<plugin_name>.plugin.bash` to enable them. That
method would make it easier for people custom tune their plugins from
within their `.bash_profile` script.