Request page compression by default, like Firefox does

youtube-dl

@@ -33,6 +33,7 @@ std_headers = {
 	'User-Agent': 'Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.12) Gecko/20101028 Firefox/3.6.12',
 	'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
 	'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
+	'Accept-Encoding': 'gzip, deflate',
 	'Accept-Language': 'en-us,en;q=0.5',
 }