Update Postgres.app instructions

- remove version number on git so we don't have to change it all the time
- update file path for postgresql.conf
- configure host for psql
- make the seed section its own section so its not embedded as a code snipppet

docs/DEVELOPMENT-OSX-NATIVE.md

@@ -87,7 +87,7 @@ Either way, you'll now want to install the 'turbo' version of Ruby 2.0.
 
 OS X comes with Git (which is why the LibXML2 dance above will work before this step!), but I recommend you update to Homebrew's version:
 
-    brew install git # 1.8.5.3 is current
+    brew install git
 
 You should now be able to check out a clone of Discourse.
 
@@ -95,23 +95,23 @@ You should now be able to check out a clone of Discourse.
 
 Atlassan has a free Git client for OS X called [SourceTree](http://www.sourcetreeapp.com/download/) which can be extremely useful for keeping visual track of what's going on in Git-land. While it's arguably not a full substitute for command-line git (especially if you know the command line well), it's extremely powerful for a GUI version-control client.
 
-## Postgres 9.2
+## Postgres 9.3
 
-OS X ships with Postgres 9.1.5, but you're better off going with the latest from Homebrew or [Postgres.App](http://postgresapp.com).
+OS X ships with Postgres 9.1.5, but you're better off going with the latest from Homebrew or [Postgres.app](http://postgresapp.com).
 
 ### Using Postgres.app
 
-After installing the [Postgres93 App](http://postgresapp.com/), there is some additional setup that is necessary for discourse to create a database on your machine.
+After installing [Postgres.app](http://postgresapp.com/), there are some additional setup steps that are necessary for discourse to create a database on your machine.
 
 Open this file:
 ```
-~/Library/Application Support/Postgres93/var/postgresql.conf
+~/Library/Application Support/Postgres/var-9.3/postgresql.conf
 ```
 And change these two lines so that postgres will create a socket in the folder discourse expects it to:
 ```
-unix_socket_directories = '/var/pgsql_socket'»# comma-separated list of directories
+unix_socket_directories = '/var/pgsql_socket'   # comma-separated list of directories
 #and
-unix_socket_permissions = 0777»·»·# begin with 0 to use octal notation
+unix_socket_permissions = 0777  # begin with 0 to use octal notation
 ```
 Then create the '/var/pgsql/' folder and set up the appropriate permission in your bash (this requires admin access)
 ```
@@ -125,6 +125,25 @@ netstat -ln | grep PGSQL
 ```
 And you should be good to go!
 
+#### Troubleshooting
+
+If you get this error when starting `psql` from the command line:
+
+    psql: could not connect to server: No such file or directory
+    Is the server running locally and accepting
+    connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
+    
+It is because it is still looking in the `/temp` directory and not in `/var/pgsql_socket`.
+
+If running `psql -h /var/pgsql_socket` works then you need to configure the host in your `.bash_profile`:
+
+```
+export PGHOST="/var/pgsql_socket"
+````
+
+Then make sure to reload your config with: `source ~/.bash_profile`. Now `psql` should work.
+
+
 ### Using Homebrew:
 
 Whereas Ubuntu installs postgres with 'postgres' as the default superuser, Homebrew installs it with the user who installed it... but with 'postgres' as the default database. Go figure.
@@ -141,7 +160,8 @@ In theory, you're not setting up with vagrant, either, and shouldn't need a vagr
     launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
     launchctl load ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
 
-    # Seed data relies on both 'postgres' and 'vagrant'
+### Seed data relies on both 'postgres' and 'vagrant'
+    
     createuser --createdb --superuser postgres
     createuser --createdb --superuser vagrant