Codecov script added successfully for coverage in travis.yml file

[SinghHimadri]

Issue that this pull request solves

20

Closes: # (issue number)

20

Proposed changes

Brief description of what is fixed or changed script added to see code coverage on codecov.io Cureent coverage is 72.83%.Current file successfully build Travis CI and codecov but two lines have {16,20} to build only travis.yml file.

Types of changes

Put an x in the boxes that apply

• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation update (Documentation content changed)
• [ ] Other (please describe):

Checklist

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• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings

Screenshots

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Other information

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[SinghHimadri]

@rpotter12 Please review I have added script for codecov in travis.yml file.

[priyansh19]

@rpotter12 please add labels to this PR