Examples: A few minor changes

examples/advanced/create_ast.py

@@ -1,4 +1,7 @@
 """
+Creating an AST from the parse tree
+===================================
+
     This example demonstrates how to transform a parse-tree into an AST using `lark.ast_utils`.
 
     create_transformer() collects every subclass of `Ast` subclass from the module,

examples/standalone/README.md

@@ -0,0 +1,20 @@
+# Standalone example
+
+To initialize, cd to this folder, and run:
+
+
+````bash
+	 ./create_standalone.sh
+```
+
+Or:
+```bash
+python -m lark.tools.standalone json.lark > json_parser.py
+````
+
+Then run using:
+
+```bash
+python json_parser_main.py <path-to.json>
+```
+