change README

README.md

@@ -14,9 +14,9 @@ set a new TF:
 tfTree.addTF("refPoint","global"); 
 tfTree.addTF("front","refPoint"); 
 ```
-Each TF with "name" is referenced to an other TF. Main base is "global". It's default base, if not defined differently
+Each TF with "name" is referenced to an other TF. Main base is "global". It's default base, if nothing is referenced 
 
-After initialize neede TFs, the structure can be showed: 
+After initialization, the structure can be showed: 
 ```
 tfTree.printBranches("global"); 
 ```