Add a stop function to the base connection class.

lib/connection.js

@@ -101,6 +101,19 @@ namespace("Cylon", function() {
       return this.robot.initAdaptor(opts.adaptor, this.self, opts);
     };
 
+    // Public: Stop the adaptor's connection
+    //
+    // Returns nothing
+    Connection.prototype.stop = function() {
+      var msg;
+      msg = "Stopping adaptor '" + this.name + "'";
+      if (this.port != null) {
+        msg += " on port '" + (this.port.toString()) + "'";
+      }
+      Logger.info(msg);
+      return this.disconnect();
+    };
+
     return Connection;
 
   })(EventEmitter);