A few grammar fixes in ReadMe.md

[nicksherron]

Pardon the grammar policing; I couldn’t help myself. Thanks for making this, by the way. It’s exactly what I was looking for.

[Slach]

thanks for contribution

[coveralls]

Pull Request Test Coverage Report for Build 9525025505

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall first build on master at 65.508%

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Totals
Change from base Build 9516418689:	65.5%
Covered Lines:	8539
Relevant Lines:	13035

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💛 - Coveralls