Add a few example playlists

examples/master.m3u8

+#EXTM3U
+#EXT-X-INDEPENDENT-SEGMENTS
+#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=2483711,RESOLUTION=1280x720,FRAME-RATE=30.000
+01.m3u8
+#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=4669446,RESOLUTION=1920x1080,FRAME-RATE=30.000
+02.m3u8

examples/playlist.m3u8

+#EXTM3U
+#EXT-X-TARGETDURATION:7
+#EXT-X-MEDIA-SEQUENCE:226769855
+#EXT-X-VERSION:3
+#EXT-X-KEY:METHOD=NONE
+#EXT-X-PROGRAM-DATE-TIME:2020-04-20T13:23:02.953Z
+#EXTINF:6,
+20200318T153804-226769855-01-20200420T132303.ts
+#EXT-X-PROGRAM-DATE-TIME:2020-04-20T13:23:08.953Z
+#EXTINF:8,
+20200318T153804-226769856-01-20200420T132309.ts
+#EXT-X-PROGRAM-DATE-TIME:2020-04-20T13:23:16.953Z
+#EXTINF:6,
+20200318T153804-226769857-01-20200420T132317.ts
+#EXT-X-PROGRAM-DATE-TIME:2020-04-20T13:23:22.953Z
+#EXTINF:8,
+20200318T153804-226769858-01-20200420T132323.ts