README.md: update installation instructions

With go >= 1.17, `go get` way of installing is deprecated.

1 files changed, 8 insertions, 0 deletions

diff --git a/README.md b/README.md
index 4255066..831ae18 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,14 @@ install it with:
 go get ricketyspace.net/cryptopals
 ```
 
+or
+
+```
+go install ricketyspace.net/cryptopals@latest
+```
+
+if using `go >= 1.17`.
+
 run challenges with:
 
 ```bash