Pass self to power board functions

Author: RealOrangeOne

robot/power.py

@@ -2,8 +2,8 @@ class PowerBoard:
     def __init__(self, serial):
         self.serial = serial
 
-    def power_on():
+    def power_on(self):
         print("Powering on outputs on board {}.".format(self.serial))
 
-    def power_off():
+    def power_off(self):
         print("Powering off outputs on board {}.".format(self.serial))