Add new soft parameters

Make max_connections and innodb_buffer_pool_size configurable
through soft params instead of hard.

Change-Id: Id0bb8f6b6091289275864bf4dd6a6890d11b4782
diff --git a/README.rst b/README.rst
index 98eba4a..609ec3d 100644
--- a/README.rst
+++ b/README.rst
@@ -56,20 +56,19 @@
           user: root
           password: pass
 
-InnoDB parameters
-=================
+Configurable soft parameters
+============================
 
-- **innodb_buffer_pool_size** - the default value is 35% of the available ram
+- **galera_innodb_buffer_pool_size** - the default value is 3138M
+- **galera_max_connections** - the default value is 20000
 
 Usage:
 
 .. code-block:: yaml
 
-    galera:
-        master:
-          innodb_buffer_pool_size: 1024M
-        slave:
-          innodb_buffer_pool_size: 1024M
+    _param:
+      galera_innodb_buffer_pool_size: 1024M
+      galera_max_connections: 200 
 
 Usage
 =====