Update copyright year (#221)

alessfg · web-flow · commit 1afb425c19c9 · 2020-01-29T19:37:09.000+01:00
diff --git a/README.md b/README.md
@@ -460,4 +460,4 @@ Author Information
 
 [Grzegorz Dzien](https://github.com/gdzien)
 
-&copy; [NGINX, Inc.](https://www.nginx.com/) 2018 - 2019
+&copy; [NGINX, Inc.](https://www.nginx.com/) 2018 - 2020

Original file line number	Diff line number	Diff line change
`@@ -460,4 +460,4 @@ Author Information`
`460`	`460`
`461`	`461`	`[Grzegorz Dzien](https://github.com/gdzien)`
`462`	`462`
`463`		`-© [NGINX, Inc.](https://www.nginx.com/) 2018 - 2019`
	`463`	`+© [NGINX, Inc.](https://www.nginx.com/) 2018 - 2020`