add sample geodataframe notebook with readme notes

[emmalu]

Summary:

What did I do?
Created a sample notebook that covers how to leverage data from a Pandas Geodataframe as a GeoData layer within stac_ipyleaflet.

Why *** did I do it? (What was the motivation?)

• To help users extend current stac_ipyleaflet functionality.

How *** can someone test or demo my changes?

• Follow the notebook!

Fixes or Addresses Issue #: #85

Checklist before requesting a review:

• My code follows the guidelines of this project
• I performed a self-review of my code changes
• I have added my changes to the change log (HISTORY.rst)
• I have completed spell-checking, removed unnecessary print statements & commented-out code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• New and existing unit tests pass locally with my changes

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[chuckwondo]

This is a very minor comment, but perhaps you should consider renaming the class StacIpyleaflet to StacMap. This might aid in clarity as to what it is.

Consider that when using iplyleaflet, this is conventional:

from ipyleaflet import Map

m = Map()

or

import ipyleaflet

m = ipyleaflet.Map()

Since StacIpyleaflet is a subclass of Map (ipyleaflet.Map), it might aid clarity by naming StacIpyleaflet to StacMap so that it better corresponds to the iplyleaflet conventions. This would then give you this:

from stac_ipyleaflet import StacMap

m = StacMap()

or

import stac_ipyleaflet

m = stac_ipyleaflet.StacMap()

It seems a bit odd to do the following, not only because of the redundancy, but also because it isn't obvious that StacIpyleaflet is an ipyleaflet.Map:

from stac_ipyleaflet import StacIpyleaflet

Anyway, just my 2 cents.

[emmalu]

Anyway, just my 2 cents.

Thanks for your feedback, @chuckwondo - I created a new issue around this.