Documentation generation using Sphinx

[czgdp1807]

References to other Issues or PRs or Relevant literature

Brief description of what is fixed or changed

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[codecov]

Codecov Report

Merging #415 (b299269) into master (ce7a749) will increase coverage by 0.005%.
The diff coverage is 100.000%.

@@              Coverage Diff              @@
##            master      #415       +/-   ##
=============================================
+ Coverage   98.606%   98.611%   +0.005%     
=============================================
  Files           26        27        +1     
  Lines         3516      3529       +13     
=============================================
+ Hits          3467      3480       +13     
  Misses          49        49               

Impacted Files	Coverage Δ
pydatastructs/graphs/algorithms.py	99.489% <ø> (ø)
pydatastructs/graphs/graph.py	100.000% <ø> (ø)
pydatastructs/strings/algorithms.py	100.000% <ø> (ø)
pydatastructs/trees/binary_trees.py	97.818% <ø> (ø)
docs/source/conf.py	100.000% <100.000%> (ø)