Update README.md

Author: MitchellShibilski-Unkel

README.md

@@ -2,4 +2,4 @@
 Simplifies the process of setting up and using sensors in Arduino. Currently has both ultrasonic and IR compatibilities.
 
 # How to use
-Both the ultrasonic and IR classes are very similar in the setup process and how they work. They both have a `.begin()` function to setup your sensor; please put in the `void setup()`. They have a single function to get their data; ultrasonic = `.getData` & IR = `.getValue`; please put either of those in the `void loop()`.
+Both the ultrasonic and IR classes are very similar in the setup process and how they work. They both have a `.begin()` function to setup your sensor; please put in the `void setup()`. They have a single function to get their data; ultrasonic = `.getData` & IR = `.getValue`; please put either of those in the `void loop()`. Also, please use `.returnValue()` or `.returnData()` to get the data back to you/returned to you.