added license

Author: devjgm

Cargo.toml

@@ -2,6 +2,7 @@
 name = "sumcol"
 version = "0.1.0"
 edition = "2021"
+license = "MIT OR Apache-2.0"
 description = "A command-line tool to sum a column of numbers."
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html