Create nsd42.txt

I would like to add the Nashua School District to the JetBrains list.
nsd42.net is used for the student emails only, which are assigned to student ID's. ex: 100200300@nsd42.net
The main school website is: www.nashua.edu
The website for Nashua Technology Center, which provides many career focused courses, is here: http://nsd42.net/ntc/