Initial code commit to GitHub
updated readme

Added an example use and a Q&A section
Removed old single thread lookups comment
Updated Ignore files
Fixed readme example error with the variable name
New method to check input

The argument that is passed to NSCheck now gets passed on to a method
called "get_domains".
If the argument has .txt apended to it, the method tries to read domain
names out of the file. If it's anything besides a .txt extension, it
assumes it's a domain name and does a lookup of it. Returns an array of
domain(s). If there is an error, the get_domains method prints the
error and exits out.
Updated readme

Readme now includes an example for passing a single domain.
A new Q&A for why only 1 nameserver is returned and why it's not always the same one.
fixed readme typo
updated readme