add comment on scss file and merge new 2.0.1 and legacy 1.0.1 completely
add comment on scss file and merge new 2.0.1 and legacy 1.0.1 completely

Signed-off-by: Bo-Yi Wu <f80eec1bf98b3feebacc247f35f2b506218004cb@gmail.com>

appleboy/normalize.scss