added comment about how to disable postgreSQL cache

CHANGELOG.md

 Upcoming version:
 -----------------
+  - added comment about how to disable postgreSQL cache (Nikolaus Krismer)
   - changed location of datasets on dbis-informatik (srid used as suffix now) (Nikolaus Krismer)
   - added support for chaging srid and fixed problem with exported datasets (did not contain density) (Nikolaus Krismer)
   - always installing phpliteadmin when using spatialite now (Nikolaus Krismer)

conf/postgresql.conf

@@ -113,7 +113,7 @@ max_connections = 100			# (change requires restart)
 
 # - Memory -
 
-#shared_buffers = 128kB			# deactivates postgreSql caching
+#shared_buffers = 128kB			# deactivates caching
 shared_buffers = 128MB			# min 128kB
 								# (change requires restart)
 #temp_buffers = 8MB			# min 800kB