Wordsmith mozjpeg README file
This includes more descriptive text for the project summary (the same
text that is in the package descriptions), a more thorough description of the
libjpeg API extensibility framework, reformatting to improve readability
(particularly on 80-column terminals), and numerous grammar tweaks.
Merge pull request #126 from dcommander/doc-tweaks

Tweak mozjpeg README file