Fix README to correspond with current state

Author: Jan Drábek

README.md

@@ -1,5 +1,4 @@
-Git Version Panel
-======================
+# Git Version Panel
 
 Panel for Tracy debug panel.
 Shows current branch and current revision hash to be able identify your deployed version on sight.
@@ -8,22 +7,36 @@ Inspired by https://gist.github.com/vvondra/3645108.
 
 ![](http://oi59.tinypic.com/34oviv9.jpg)
 
-Installing
-----------
+## Installing
 
 Install library via composer:
 
 ```
 composer require jandrabek/tracy-gitversion-panel
 ```
 
-Register panel
+
+## Registerring...
+
+### In older versions of Nette (< 2.2)
 
 ```
 nette:
     debugger:
-        bar: [JanDrabek\Tracy\GitVersionPanel]
-# Or when you register multiple extensions
-#       bar:
-#           - JanDrabek\Tracy\GitVersionPanel
+        bar:
+            - JanDrabek\Tracy\GitVersionPanel
+```
+
+### In newer versions of Nette (>= 2.2)
+
+```
+tracy:
+    bar:
+        - JanDrabek\Tracy\GitVersionPanel
+```
+
+### In pure Tracy
+
 ```
+Tracy\Debugger::getBar()->addPanel(new JanDrabek\Tracy\GitVersionPanel());
+```