docs(contributors) : Add @imbhargav5 to contributors list

[imbhargav5]

What:
Adding @imbhargav5 to contributors list.

Why:
Contributed to #147 #151 #148

How:
Used script npm start contributors.add

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@074996b). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             master   #152   +/-   ##
=======================================
  Coverage          ?   100%           
=======================================
  Files             ?     11           
  Lines             ?    346           
  Branches          ?      0           
=======================================
  Hits              ?    346           
  Misses            ?      0           
  Partials          ?      0

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[kentcdodds]

Thanks!