README.md: Typo
README.md: Formatting
README.md: Add info for submitting patches
README.md: Formatting
Revert "README.md: Formatting"

This reverts commit 0c01fc577d9bcd5e43e20289f5e7efa63ede06a8.
Added missing 30c3 mp4-lq files.
Add missing 30c3 webm files.
Add missing 30c3 opus files.
Add missing 30c3 mp4 files.
Add missing 30c3 mp4-hd files.
Add missing 30c3 mp3 files.