Partially update Emoji ZWJ sequences to Emoji 5.0

Partially update emoji-zwj-sequences.txt to Emoji 5.0 data. Sequences
that we don't support in our emoji font yet (those containing Unicode
10.0 characters and golfers with skin tones) have been commented out
from the file.

Bug: 30999328
Test: fontchain_lint.py is updated and passes.
Change-Id: I956ba139737bd79f5e31324ed77df9182342df4e
diff --git a/README.android b/README.android
index a267758..0af0512 100644
--- a/README.android
+++ b/README.android
@@ -1,5 +1,7 @@
-URL: http://www.unicode.org/Public/9.0.0/ucd/ and http://www.unicode.org/repos/draft/trunk/Public/emoji/4.0/
-Version: 9.0.0 and 4.0 beta
+URL: http://www.unicode.org/Public/9.0.0/ucd/
+URL: http://www.unicode.org/repos/draft/trunk/Public/emoji/4.0/
+URL: http://www.unicode.org/Public/emoji/5.0/
+Version: Unicode 9.0.0, emoji 4.0 beta, and emoji 5.0 beta
 License: Unicode
 License File: NOTICE
 
@@ -10,3 +12,7 @@
 Sequences for the the three characters U+2640, U+2642, and U+2695 have been
 added to StandardizedVariants.txt in anticipation of getting added to Unicode
 10.0.
+
+emoji-zwj-sequences.txt has been updated to Emoji 5.0 beta version, with
+sequences containing Unicode 10.0 and golfers with skin tones commented out
+(because we don't support those in our emoji font yet).