Update documentation

.configuration.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
-export $PSQL_OPTS=
-export $DB_NAME=
+export PSQL_OPTS="-h localhost -U root"
+export DB_NAME=photowall

README.md

@@ -6,20 +6,20 @@
 
 #### Configuration
 All configuration needed is done in .configuration.sh.
-Note that a
-[.pgpass](http://www.postgresql.org/docs/9.3/static/libpq-pgpass.html) file will
-do most of the times as well and therefore configuration is not mandatory.
+
+To avoid having to enter password for selected user on each run, just use a
+[.pgpass](http://www.postgresql.org/docs/9.3/static/libpq-pgpass.html) file.
 
 #### Migration files
 The files in the /migrations directory are changes to the scheme, not the full
 scheme.
 
 The naming convention for migration files are:
-- 000.000
-- 000.001
-- 000.002
-- 000.003
-- 000.004
+- 000.000.sql
+- 000.001.sql
+- 000.002.sql
+- 000.003.sql
+- 000.004.sql
 - ...and so on
 
 **Example**

migrations/000.000.sql

@@ -0,0 +1 @@
+-- Empty