Added example to ENV

[pritamps]

Small Update to README

[codecov]

Codecov Report

Merging #38 (de046d0) into main (66acef0) will decrease coverage by 14.29%.
The diff coverage is n/a.

❗ Current head de046d0 differs from pull request most recent head cbe8c89. Consider uploading reports for the commit cbe8c89 to get more accurate results

@@             Coverage Diff             @@
##             main      #38       +/-   ##
===========================================
- Coverage   95.97%   81.68%   -14.30%     
===========================================
  Files          16       10        -6     
  Lines         472      333      -139     
===========================================
- Hits          453      272      -181     
- Misses         19       61       +42     

Impacted Files	Coverage Δ
app/routers/sessions.py	25.49% <0.00%> (-70.59%)	⬇️
app/routers/session_answers.py	32.25% <0.00%> (-61.30%)	⬇️
app/schemas.py	92.59% <0.00%> (-0.52%)	⬇️
app/main.py	100.00% <0.00%> (ø)
app/models.py	100.00% <0.00%> (ø)
app/tests/test_quizzes.py	100.00% <0.00%> (ø)
app/tests/test_questions.py	100.00% <0.00%> (ø)
app/tests/test_sessions.py
app/tests/base.py
app/settings.py
... and 3 more

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