Be able to use @example in jsdoc

[willshulman]

We should be able to provide links to md files which will output at the end of the description text. If we dont see "http://..." we can just take what the doclet parsed.

[tfogo]

I don't think outputting at the end of the description text is the best implementation. I can see us wanting to include multiple examples throughout the description. Something like this might be better:

/**
 * @description Here is a config. You can set it up like this:
 *              {@example link/to/example.md}
 *              Or like this:
 *              {@example link/to/other/example.md}
 */

This would be like the Python documentation: https://docs.python.org/3.6/library/stdtypes.html#str.split