Merge branch 'master' of https://github.com/simon0302010/gridwm

Update demo link in README.md

added optional snowflakes on root window

fixed bug where only bar would be raised if clicked on top bar of window

simplify window positioning logic

update installation instructions to include libxrandr-dev dependency

working window top bars (experimental)

made create_gc() function more generic

better get_name() function

added get_name and get_focused functions