add support ruby version

tknzk · tknzk · commit dc2338a63d85 · 2019-12-31T23:41:02.000+09:00
diff --git a/README.md b/README.md
@@ -115,6 +115,7 @@ We created a demo project for Rails4 that uses the latest version of this librar
 * 2.4.x
 * 2.5.x
 * 2.6.x
+* 2.7.x
 * JRuby 1.7.19
 * JRuby 9.0.0.0
 * JRuby 9.2.0.0
