Create dupage88.txt

Student and staff email is through (ID)@dupage88.org while the website is https://www.dupage88.net

Full course listing: https://www.dupage88.net/site/public/files/?item=1789
IT related courses: https://dupage88.net/site/public/files/?item=1923
Merge pull request #574 from iiMittens/master

Create dupage88.txt