add license to cargo toml

adrian-kong · adrian-kong · commit 3f7857e93365 · 2023-01-13T10:56:33.000+11:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -6,6 +6,7 @@ authors = ["Swift Navigation <dev@swiftnav.com>"]
 edition = "2021"
 readme = "README.md"
 repository = "https://github.com/swift-nav/clap-io"
+license = "MIT"
 
 [dependencies]
 atty = "0.2"
