The contents of this directory are used to deploy the application as a
web browser plugin.  The following references are relevant to the
technologies used here:

"Plugins," Mozilla Developer Center, last modified August 23, 2009, https://developer.mozilla.org/en/Plugins.

"Shipping a plugin as an extension," Mozilla Developer Center, last
modified June 2, 2008,
https://developer.mozilla.org/en/Shipping_a_plugin_as_an_extension.