Add README

Signed-off-by: Gris Ge <[email protected]>

Author: cathay4t

Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 homepage = "https://github.com/rust-netlink/netlink-packet-core"
 keywords = ["netlink", "linux"]
 license = "MIT"
-readme = "../README.md"
+readme = "README.md"
 repository = "https://github.com/rust-netlink/netlink-packet-core"
 description = "netlink packet types"
 

README.md

@@ -0,0 +1,5 @@
+# Rust crate for common netlink packet parsing
+
+The `netlink-packet-core` is the glue for all the other netlink-packet-*
+crates. It provides a `NetlinkMessage<T>` type that represent any netlink
+message for any sub-protocol.