Done Issue 16: Games played counter plugin.

Mage.Common/src/mage/interfaces/PluginException.java

@@ -0,0 +1,20 @@
+package mage.interfaces;
+
+/**
+ * Exception thrown by plugin on errors.
+ * 
+ * @author nantuko
+ * 
+ */
+public class PluginException extends MageException {
+
+	private static final long serialVersionUID = 5528005696138392272L;
+
+	public PluginException(String message) {
+		super(message);
+	}
+	
+	public PluginException(Throwable t) {
+		super(t);
+	}
+}