Update README.md
Merge pull request #732 from mhurne/patch-1

Update README.md
Fix spelling error in README.md
Merge pull request #733 from mhurne/patch-2

Fix spelling error in README.md
Fix spelling errors and improve a sentence
Merge pull request #734 from mhurne/patch-3

Fix spelling errors and improve a sentence
Merge remote-tracking branch 'upstream/master' into develop
Added support for an experimental flag and all experimental operations will have a 75% grayscale filter applied and 'EXPERIMENTAL -' added to the summary