Implement add_keypair semantics

src/main.rs

@@ -4,12 +4,16 @@ mod handshake;
 mod router;
 mod types;
 
-use sodiumoxide;
+use std::sync::Arc;
 
-use handshake::Device;
+use sodiumoxide;
 use types::KeyPair;
 
 fn main() {
     // choose optimal crypto implementations for platform
     sodiumoxide::init().unwrap();
+
+    let mut rdev = router::Device::new();
+
+    let pref = rdev.add();
 }