Add PHP module zlib.so

Add PHP module zlib.so

Add Heroku Postgres settings (3.5.1 update)

Update to Wordpress 3.5

Merge pull request mhoofman#24 from bikerm16/master

Update to Wordpress 3.4.2

updated to 3.4.1

Update to 3.4 and PG4WP 1.3.0

Update to 3.3.2

Get database settings from Heroku DATABASE_URL environment variable.

Added updating instructions to the README