add supported tags section

README.rst

@@ -34,6 +34,33 @@ directly from a string:
 
     m3u8_obj = m3u8.loads('#EXTM3U8 ... etc ... ')
 
+Supported tags
+=============
+
+* #EXT-X-TARGETDURATION
+* #EXT-X-MEDIA-SEQUENCE
+* #EXT-X-PROGRAM-DATE-TIME
+* #EXT-X-MEDIA
+* #EXT-X-PLAYLIST-TYPE
+* #EXT-X-KEY
+* #EXT-X-STREAM-INF
+* #EXT-X-VERSION
+* #EXT-X-ALLOW-CACHE
+* #EXT-X-ENDLIST
+* #EXTINF
+* #EXT-X-I-FRAMES-ONLY
+* #EXT-X-BYTERANGE
+* #EXT-X-I-FRAME-STREAM-INF
+* #EXT-X-DISCONTINUITY
+* #EXT-X-CUE-OUT
+* #EXT-X-CUE-OUT-CONT
+* #EXT-X-INDEPENDENT-SEGMENTS
+* #EXT-OATCLS-SCTE35
+* #EXT-X-CUE-OUT
+* #EXT-X-CUE-IN
+* #EXT-X-CUE-SPAN
+* #EXT-X-MAP
+* #EXT-X-START
 
 Encryption keys
 ---------------