Theme writers are now able to use FontAwesome names and IDs instead of
the symbols itself!
The implementation itself is *slightly* hacky and might get improved in
the future: Upon the first start, a YAML file containing the FontAwesome
symbols is fetched from
https://raw.githubusercontent.com/FortAwesome/Font-Awesome/master/src/icons.yml
Note: This is only done once - to retrigger this (i.e. for an update),
please just delete the file and restart bumblebee-status.
Then, in the *icon* theme itself, you can use ${<name or id>} instead of
the actual symbol.
Names and IDs can be found here:
http://fontawesome.io/cheatsheet/
(simply remove the "fa-" prefix)
An example is provided in themes/icons/awesome-fonts.json.
(finally) fixes#20
sorry for taking so long :)