added appropriate explanation for class

src/Exception/BehaviorImplementationRefusedException.php

@@ -2,7 +2,9 @@
 namespace Gbili\Exception;
 
 /**
- * Use this in a getter whose property has not been set yet
+ * Use this in a behovior that is attempted to being used
+ * but that should not be, by design or in an attempt to 
+ * enforce best practices
  */
 class BehaviorImplementationRefusedException
 extends \Gbili\Exception\Exception