Go through the pyviz and other tutorials once again

[hdsingh]

This issue is also pre-coding task.

Tasks: Read and execute the following tutorials:

1. PyViz Tutorial — PyViz documentation
2. User Guide — HoloViews
3. Reference Guide — HoloViews
4. User Guide — GeoViews documentation
5. Gallery — GeoViews documentation
6. User Guide — Panel documentation
7. Reference Guide -- Panel 0.5.1. documentation
8. User Guide — hvPlot

[hdsingh]

Current status

• [x] PyViz Tutorial — PyViz documentation
• [x] User Guide — HoloViews
• [x] Reference Guide — HoloViews
• [x] User Guide — GeoViews documentation
• [x] Gallery — GeoViews documentation
• [x] User Guide — Panel documentation
• [x] Gallery — Panel Some examples need more time so will reference these as needed
• [x] User Guide — hvPlot

[hdsingh]

Completed.