Adds dummy function in utils to measure battery

utils.py

 import io
-
+import adafruit_ads1x15.ads1115 as ads  # noqa
 
 def get_platform():
     """Gets platform name and checks if it is a raspberry pi
@@ -18,4 +18,7 @@ def get_platform():
             on_pi = True
     except FileNotFoundError:
         pass
-    return platform, on_pi
+    return platform, on_pi
\ No newline at end of file
+
+def get_batt_voltage():
+    pass
\ No newline at end of file