Edit README.md

Amanda Butler · web-flow · commit d405e0fa0e6e · 2020-03-06T11:36:23.000-06:00
Edit file, mostly for active voice.
diff --git a/APIs_Drivers/InterruptIn_ex_2/README.md b/APIs_Drivers/InterruptIn_ex_2/README.md
@@ -1,3 +1,3 @@
 # InterruptIn example
 
-This example shows how to use InterruptIn to trigger function call when a certain event happens. The example demonstrates calling a function when a button is pressed. Specifically on the rising edge of a button press. This can be observed by LED4 blinking as the program runs and LED1 only changing when the button is pressed. 
+This example shows how to use InterruptIn to trigger a function call when a certain event happens. The example demonstrates calling a function on the rising edge of a button press. You can observe this through LED4 blinking as the program runs. LED1 only changes when the button is pressed. 

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,3 @@`
`1`	`1`	`# InterruptIn example`
`2`	`2`
`3`		`-This example shows how to use InterruptIn to trigger function call when a certain event happens. The example demonstrates calling a function when a button is pressed. Specifically on the rising edge of a button press. This can be observed by LED4 blinking as the program runs and LED1 only changing when the button is pressed.`
	`3`	`+This example shows how to use InterruptIn to trigger a function call when a certain event happens. The example demonstrates calling a function on the rising edge of a button press. You can observe this through LED4 blinking as the program runs. LED1 only changes when the button is pressed.`