Improved Blink example comment wording

Author: parzivail

build/shared/examples/01.Basics/Blink/Blink.ino

@@ -3,8 +3,8 @@
   Turns on an LED on for one second, then off for one second, repeatedly.
 
   Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO 
-  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN takes care 
-  of use the correct LED pin whatever is the board used.
+  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
+  the correct LED pin independent of which board is used.
   If you want to know what pin the on-board LED is connected to on your Arduino model, check
   the Technical Specs of your board  at https://www.arduino.cc/en/Main/Products
   
@@ -15,6 +15,9 @@
   
   modified 2 Sep 2016
   by Arturo Guadalupi
+  
+  modified 8 Sep 2016
+  by Colby Newman
 */