Cleaned up README

[Marcono1234]

• Made links to repository entries relative
• Removed incorrect apostrophe usage (?) (see also https://en.oxforddictionaries.com/punctuation/apostrophe)
• Changed table layout in source
• Fixed typo

[coveralls]

Pull Request Test Coverage Report for Build 127

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.343%

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Totals
Change from base Build 125:	0.0%
Covered Lines:	1209
Relevant Lines:	1242

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💛 - Coveralls