make a jupyter notebook demo

[prjemian]

show how to use this code in python in a jupyter notebook

[prjemian]

after a bug fix in another repo, this result:

=== ==== === === ============= ============= === ===== =============
h   k    l   mu  omega         chi           phi gamma delta        
=== ==== === === ============= ============= === ===== =============
0   1    1   0.0 3.4824458166  22.712897698  0.0 0.0   13.7997746631
0.0 8.0  0.0 0.0 22.3159408756 89.1376999998 0.0 0.0   45.1585717428
0.0 12.0 1.0 0.0 34.96346918   78.3326587635 0.0 0.0   71.8007042179
=== ==== === === ============= ============= === ===== =============

[prjemian]

We have the demo, comments not good but we have it