Merge branch 'master' of github.com:Pylons/pyramid
Merge branch 'master' of github.com:Pylons/pyramid
Merge pull request #926 from stevepiercy/master

Add "Before You Begin"; fix whitespace in CHANGES.txt so it builds
Merge branch 'master' of github.com:Pylons/pyramid
Add special section for Mac OS X users.
Make installation explicit and discrete, combining suggestions from @thesteve0, @tshepang, @mcdonc.
Merge commit '2ca9bde9d2862655ddee276cd14a375e6a5adec6'