Just a minor spelling mistake in the readme
# Download best format available but not better that 480p
$ youtube-dl -f 'bestvideo[height<=480]+bestaudio/best[height<=480]'
-# Download best video only format but no bigger that 50 MB
+# Download best video only format but no bigger than 50 MB
$ youtube-dl -f 'best[filesize<50M]'
# Download best format available via direct link over HTTP/HTTPS protocol