Fixes #63 Install deps and run app through Virtual Environment

[bhaveshAn]

Checklist

• I have read the Contribution & Best practices Guide and my PR follows them.
• My branch is up-to-date with the Upstream development branch.
• The unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Short description of what this resolves:

Fixes #63 Install deps and run app through Virtual Environment

Changes proposed in this pull request:

• Update docs to install deps and run app through virtuelenv

Fixes #63 Install deps and run app through Virtual Environment

@SaptakS @niranjan94 Please review.

[codecov]

Codecov Report

Merging #64 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #64      +/-   ##
==========================================
- Coverage   74.48%   74.48%   -0.01%     
==========================================
  Files         230      230              
  Lines       15617    15617              
==========================================
- Hits        11633    11632       -1     
- Misses       3984     3985       +1

Impacted Files	Coverage Δ
app/api/helpers/export_helpers.py	94.36% <0%> (-0.71%)	⬇️

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