Merge pull request #19 from andreas-gruenwald/patch-1

Improve documentation

README.md

@@ -19,11 +19,11 @@ If you specifiy a custom tree builder class in your tree config, such as
 \AppBundle\Util\Backend\DynamicTree\VirtualProductTreeBuilder
 ```
 then it is possible to combine multiple object (types) per child node, by overriding
-the ``buildCustomTree`` method, just as in ```DefaultTreeBuilder.php````.
+the ``buildCustomTree`` method, just as in ``DefaultTreeBuilder.php``.
 
 ### Upgrade Notes
 
 #### Upgrade from v2.0.0
 If you want to use the Custom Tree Builder, please add
 the field "customTreeBuilderClass" as varchar(255) in the bundle's database table (compare installer).
-Also make sure to clear the data cache.
+Also make sure to clear the data cache.