Prepare collective.plonetruegallery 3.3.2.
Update README.txt

fixed typo ("collectivev" -> "collective")
Update README.txt

fixed some typos
Update README.txt

mention that collective.plonetruegallery should be in the eggs section along with collective.ptg.allnewest (https://github.com/collective/collective.plonetruegallery/issues/32)