docs: update and clean readme

[dionizh]

This change is 

[razvan-pro]

Reviewed 1 of 1 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @dionizh)

[codecov]

Codecov Report

Merging #1209 (8e64e3f) into master (f328bc3) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1209      +/-   ##
==========================================
- Coverage   91.34%   91.30%   -0.04%     
==========================================
  Files         111      111              
  Lines        6236     6236              
==========================================
- Hits         5696     5694       -2     
- Misses        540      542       +2     

Impacted Files	Coverage Δ
game/tests/test_random_road.py	95.57% <0.00%> (-3.54%)	⬇️
game/random_road.py	91.36% <0.00%> (+0.71%)	⬆️

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