Refactor and add docs

[ViralBShah]

No description provided.

[codecov]

Codecov Report

Patch coverage: 73.03% and project coverage change: +3.08% 🎉

Comparison is base (3ad2d84) 6.88% compared to head (05d4a98) 9.97%.

❗ Current head 05d4a98 differs from pull request most recent head 1956c69. Consider uploading reports for the commit 1956c69 to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #101      +/-   ##
=========================================
+ Coverage    6.88%   9.97%   +3.08%     
=========================================
  Files          15      17       +2     
  Lines        2366    2375       +9     
=========================================
+ Hits          163     237      +74     
+ Misses       2203    2138      -65     

Files Changed	Coverage Δ
src/GZip.jl	100.00% <ø> (+27.52%)	⬆️
src/zlib.jl	0.00% <0.00%> (ø)
src/gz.jl	73.86% <73.86%> (ø)

... and 2 files with indirect coverage changes

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