DOCS: Improve readme

Author: mficzel

README.md

@@ -9,20 +9,21 @@ Autogenerate php classes for NodeTypes with type safe property accessor methods
 - The namespace of each NodeTypeObject is derived from the packaghe-key with added ``NodeTypes`
 - The className of a NodeTypeObject is defined by the last part of the NodeTypeName with postfix `NodeTypeObject`
 
-## Precondtions
+## Preconditions
 
 The following preconditions have to be met for a package to use NodeTypeObjects.
 
-- The Package registers a PSR4 Namespace for NodeTypes in the.composer.json that points to the NodeTypes folder
-- The pattern `*NodeTypeObject.php` hast to be added to `.gitignore` to avoid committing the generated files.
-- The commands `nodetypeobjects:build` and `nodetypeobjects:clean` have to be integrated into build processes and watchers
+- The php namespace of the package is directly derived from the Neos package key. As is the default and best practice.
+- The Package registers a PSR4 Namespace for `NodeTypes` in the `composer.json` that points to the `NodeTypes` folder.
+- The pattern `*NodeTypeObject.php` is added to `.gitignore` to avoid committing the generated files.
+- The commands `nodetypeobjects:build` and `nodetypeobjects:clean` are integrated into build processes and watchers
 
 ## Usage 
 
 The package defines the following cli commands
 
 - `./flow nodetypeobjects:build Vendor.Site` : regenerate all NodeTypeObject in the given package.
-- `./flow nodetypeobjects:clean Vendor.Site` : remove all NodeTypeObject in the given package. 
+- `./flow nodetypeobjects:clean Vendor.Site` : remove all NodeTypeObject in the given package. This will also remove orphaned NodeObjects.   
 
 ## Installation