Split connect_code file into header and implementation

includes/connect_code.hpp

@@ -0,0 +1,14 @@
+#ifndef _CONNECT_CODE
+#define _CONNECT_CODE
+#include <string>
+#include <vector>
+
+namespace connect_code {
+	/* Given an address and a port, return a 'code' which has the address and port encoded in it */
+	std::string encode(std::string address, std::string port);
+
+	/* Given a code, decode it and return a vector with the address and port */
+	std::vector<std::string> decode(std::string connect_code);
+
+}
+#endif