Add jekyll gems

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Move supported devices list to the main page

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Increase font size

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>