support @@ for events

Author: jogibear9988

README.md

@@ -83,6 +83,7 @@ use if="[[expression]]" an a template element to show it conditionally
 ## Event Code Bindings
 
 with for example @click="[[this.aa(event)]]" you could create a event binding wich could run any javascript code inside of the brackets.
+use @@ if you do not want to replace - with uppercase
 
 
 ### Binding extensions