README: specify required version in readme

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

diff --git a/README.md b/README.md
index 4cb6da7072645486715122169bb5eadfb31b496b..93598c042dd52846136bc1292a90a7a2793291fc 100644 (file)
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ $ cp WireGuard/WireGuard/Config/Developer.xcconfig.template WireGuard/WireGuard/
 $ vim WireGuard/WireGuard/Config/Developer.xcconfig
 ```
 
-- Install swiftlint and go:
+- Install swiftlint and go 1.13.4:
 
 ```
 $ brew install swiftlint go