add documentation links

Cargo.toml

@@ -4,6 +4,8 @@ version = "0.1.16"
 description = "A Rust library to access raw Redox system calls"
 license = "MIT"
 authors = ["Jeremy Soller <jackpot51@gmail.com>"]
+repository = "https://github.com/redox-os/syscall"
+documentation = "https://docs.rs/redox_syscall"
 
 [lib]
 name = "syscall"

README.md

@@ -0,0 +1,7 @@
+[Redox OS][1]'s syscall API
+
+[Documentation][2]
+
+[1]: https://github.com/redox-os/redox
+[2]: https://docs.rs/redox_syscall
+