Added raw resources.

raw/briar_palette.png

raw/logo/briar_logo_big_circle.svg

raw/logo/briar_logo_bottom_black.svg

raw/logo/briar_logo_circle.svg

raw/logo/briar_logo_circle_bottom_white.svg

raw/logo/briar_logo_circle_side_white.svg

raw/logo/briar_logo_side_white.svg

raw/screenshots/00_password.png

raw/screenshots/01_nav_drawer.png

raw/screenshots/02_contact_list.png

raw/screenshots/03_private_messages.png

raw/screenshots/04_private_group.png

raw/screenshots/05_blog.png

raw/screenshots/06_forum.png

raw/screenshots/animate.sh

raw/screenshots/nexus-6p-frame.png