update README.md - Linux Mint support

PLumowina · PLumowina · commit 11c64aaa1a9a · 2018-11-20T15:18:28.000+01:00
diff --git a/README.md b/README.md
@@ -6,6 +6,7 @@ This little script compiles Nginx from source with [Brotli](https://opensource.g
 
 - Debian 9
 - Ubuntu 16.04 and Ubuntu 18.04
+- Linux Mint 19 Tara
 
 ## What does it do?
 
