Update docs with dist conf dir and .cdist conf dir info.

docs/src/cdist-quickstart.rst

@@ -68,6 +68,12 @@ code into your shell to get started and configure localhost::
     # Find out that cdist created /etc/cdist-configured
     ls -l /etc/cdist-configured
 
+Note: cdist/conf is configuration directory shipped with cdist distribution.
+If exists, ~/.cdist, is also automatically used as cdist configuration
+directory. So in the above example you could create ~/.cdist directory,
+then ~/.cdist/manifest sub-directory and create init manifest
+~/.cdist/manifest/init.
+
 That's it, you've successfully used cdist to configure your first host!
 Continue reading the next sections, to understand what you did and how
 to create a more sophisticated configuration.

docs/src/man1/cdist.rst

@@ -102,8 +102,21 @@ usage. Its primary use is for debugging type parameters.
 
 .. option:: -s/--shell
 
-    Select shell to use, defaults to current shell
+    Select shell to use, defaults to current shell. Used shell should
+    be POSIX compatible shell.
 
+FILES
+-----
+~/.cdist
+    Your personal cdist config directory. If exists it will be
+    automatically used.
+${cdist_prefix}/cdist/conf
+    The distribution configuration directory. ${cdist_prefix} is
+    installation-dependent. If you install cdist using git it is
+    equal to your cloned directory. If you install it using python
+    pip then it is equal to
+    ${prefix}/lib/python<version>/site-packages/cdist sub-directory
+    where ${prefix}, by default, is /usr/local (see :strong:`python`\ (1)).
 
 EXAMPLES
 --------