docs: Add readme

[manmartgarc]

This PR adds a basic README and fixes a couple of issues that were present in the code. Closes #10

[github-actions[bot]]

Coverage Report

File	Stmts	Miss	Cover	Missing
/opt/hostedtoolcache/Python/3.9.15/x64/lib/python3.9/site-packages/cloudtile
__init__.py	0	0	100%
__main__.py	0	65	32%	29, 33, 39, 43, 45, 48–50, 57–61, 64–66, 69–74, 76–79, 81–83, 88, 90, 93, 98–104, 123, 128–130, 134, 138, 142, 146–147, 152, 160, 164, 168, 171–172, 177, 200, 205–206, 210, 214, 225, 228, 235, 248–249
converter.py	0	31	34%	33, 40, 44–46, 54–55, 57, 59–62, 82–84, 86, 88–90, 92–95, 97, 99–101, 103–105, 107
ecs.py	0	27	40%	48–49, 62, 72–74, 76, 78–81, 83, 85, 98, 102, 106–107, 109, 113, 120–121, 123–124, 128, 138–139, 141
geofile.py	0	84	40%	41–45, 55, 70–72, 88–94, 100–101, 114–120, 133–135, 138–139, 142–143, 151–154, 157, 177, 181–184, 194, 198–201, 211–212, 215–216, 218–221, 231–234, 244–246, 249, 260–261, 263–267, 281–284, 286–287, 297, 300, 306–310, 320
s3.py	0	0	100%
TOTAL	430	207	51%

Tests	Skipped	Failures	Errors	Time
25	0 :zzz:	0 :x:	0 :fire:	5.998s :stopwatch: