Added config file sample.

settings.conf

+# Configuration file for Calamares
+# Syntax is YAML 1.2
+---
+# Modules can be core modules (with different interfaces) and QtWidgets page modules.
+# They could all be placed in a number of different paths.
+modules-search:			[ local, /path/to/dir/with/more/modules ]
+
+# We define the module names in the order they should show up (QtWidget page modules,
+# with one or more pages) OR be executed if enqueued (all other modules).
+# Pages can also enqueue jobs for delayed execution.
+# TBD: do we want to allow non-page modules (core-modules) to be set as immediate or
+# delayed? Is this an intrinsic property of a module? Does it depend on whether it's
+# a QProcess, a Python script or a plugin? More research is required. --teo
+modules-prepare : 		[ greeting, language, summary ]
+modules-postinstall : 	[ finished ]