update doc

- add properties, parameters and commands to the doc string autoatically
- change names to "Frappy"
- started tutorial
- changed doc structure slightly

Change-Id: I87bef91384d138c738d12ddcf3a1de7f758a0973

secop_demo/cryo.py

@@ -181,7 +181,10 @@ class Cryostat(CryoBase):
         return (self.p, self.i, self.d)
 
     def do_stop(self):
-        # stop the ramp by setting current setpoint as target
+        """"stop the ramp
+
+        by setting current setpoint as target
+        """
         # XXX: discussion: take setpoint or current value ???
         self.write_target(self.setpoint)