Use how ever you like; Just don't claim that you made it, and don't change the license agreement.
You are hereby granted the freedom to use, modify, and integrate this code into your own projects in any manner you deem appropriate.
Attribution to the original developer is not required. However, you are strictly prohibited from falsely claiming or implying exclusive authorship of the source code provided in this package.
This code can be integrated into any project, regardless of its license. However, any source code derived from this code must retain this license. This code must not be re-licensed under a different license when redistributed, either in its original form or as part of another project.
This code is provided "as is", without warranty of any kind, express or implied. No representation is made about the suitability of this code for any purpose. You acknowledge that any use of this code is at your sole risk and discretion. The original developer is not liable for any consequences arising from the use of this code.