Update README.md [ci skip]

- Normalize whitespace in headings.
- Remove obsolete reference to GeekQuote plugin that doesn't seem to exist anymore.
- Edit for spelling and grammar.
Merge pull request #242 from GLolol/patch-1

Update README.md [ci skip]
Wikipedia: Fix parsing of disambiguation pages (Closes #76)
Wikipedia: s/Possible results are/Possible results include/
Wikipedia: update tests (they had not been changed to reflect #235 / ae9552c)
Merge pull request #243 from GLolol/wikipedia-disambig

Wikipedia: Fix parsing of disambiguation pages (Closes #76)
Merge pull request #244 from GLolol/wikipedia/fix-tests

Wikipedia: update tests to reflect #235
Wikipedia: revert localization changes
Merge pull request #245 from GLolol/wikipedia/include-are

Wikipedia: s/Possible results are/Possible results include/
Markovgen: Generate messages based on two consecutive words instead of one.
Bug fix.
Markovgen: readability.