README describes user-extensible escaping rules (not just HTML or no escaping)

README.md

@@ -233,6 +233,29 @@ You can change the default HTML escaping behavior when obtaining a compiler:
     // result: <bar>
     // not: &lt;bar&gt;
 
+User-defined escaping rules
+---------------------------
+
+You can change the escaping behavior when obtaining a compiler, to support file formats other than HTML and plain text.
+
+Implement the Escaping interface.  If you only need to replace fixed strings in the text, you can subclass SimpleEscaping:
+
+        public class StrangeFormatEscaping extends SimpleEscaping {
+            public StrangeFormatEscaping() {
+                super(new String[][] {
+                    {"[", "[["},
+                    {"]", "]]"}
+            });
+        }
+
+Pass an instance of your Escaping implementation when obtaining a compiler:
+
+    Mustache.compiler().escape(new StrangeFormatEscaping()).compile("{{foo}}").execute(new Object() {
+        String foo = "[bar]";
+    });
+    // result: [[bar]]
+
+
 Special variables
 -----------------