initial commit
[sup] update README with goals, todo, background
[add] autotools project files

-restructure application files
-move pkg-config calls to new configure script
[sup] update README

-reflect removal of GNU-make specific 'wildcard function' use
-add build / installation instructions
[sup] shift miscellaneous untracked files to 'temp/' and ignore
[add] signal callback stubs, and hook up close button
[add] default key handler and some additional logging