Update PROJECT_README.md with updated command

fab copytext.update -> fab text.update
Emerson isn't here anymore
port over fixed deployment command from songs. closes #492
edit default tickets for house social media stuff. closes #495
Merge pull request #424 from brentajones/master

Update PROJECT_README.md with updated command
Merge pull request #491 from richardcornish/master

--no-site-packages has been virtualenv default since 2011-11-30
Merge remote-tracking branch 'upstream/master'