repo: update Cargo.toml

Signed-off-by: Xiaobo Liu <cppcoffee@gmail.com>

Author: cppcoffee

Cargo.toml

@@ -2,6 +2,10 @@
 name = "hugepage-rs"
 version = "0.1.0"
 edition = "2018"
+license = "MIT OR Apache-2.0"
+description = "wrapped allocator for linux hugepage"
+repository = "https://github.com/cppcoffee/hugepage-rs"
+readme = "README.md"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html