Trouble verifying files from library

I installed and configured the proper pathways for Ringo Software Libraries used for Wink on Arduino 1.8.6. Unfortunately, when I try to run a program an instructor provided that calls on one of these files it returns with the following message:

Arduino: 1.8.6 (Mac OS X), Board: "Arduino Pro or Pro Mini, ATmega328P (3.3V, 8 MHz)"

In file included from /Applications/Arduino/08092018_Biorobobotics_test_demo_Braitenberg2b_Schema/08092018_Biorobobotics_test_demo_Braitenberg2b_Schema.ino:8:0:
WinkHardware.h:28:31: error: Adafruit_NeoPixel.h: No such file or directory
compilation terminated.
exit status 1
Adafruit_NeoPixel.h: No such file or directory

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

.

What should I do?

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