1. You can do "sudo python setup.py install" to install the package, so that
   you can use it anywhere.

2. Please see the code in the test/ directory to see how to use the
   interpolation scheme.

3. The Interp class is the most general multivariate case, however, it is not
   as fully tested as the 1D and 2D special cases.

4. Shoot me an email (qiqi.wang@gmail.com) if the code does not work / is
   wrong / is ugly.