update README.md

README.md

@@ -63,6 +63,23 @@ to it using 'dot' syntax like in Java.
 City of residence: {{address.city}}
 ```
 
+If a variable's name has any special characters (such as a `-` character), you can access it using 'subscript' syntax
+instead.
+
+```jinja
+Customer name: {{customer['full-name'}}
+```
+
+If a "root" variable has special characters in it's name, you can also access it using the same syntax, but you will
+need to access it off of the `model` variable which all variables set in the template are bound to.
+
+```jinja
+Order number: {{model['customer-order'].orderNumber}}
+```
+
+Otherwise, you normally don't need to include `model`, it is implicit.
+
+
 ### Web Apps
 
 For web apps built on Compojure, you can do something like:
@@ -222,6 +239,15 @@ templates include other template files but those included files are never direct
 not get recompiled and cached unless the parent template is updated as well. This can be a problem during development
 of an application, so you may want to turn caching off during development.
 
+## Debugging Tips
+
+One other helpful use of `model` is for debugging when working with a lot of data being passed to a template. You can
+dump the entire set of variables passed to the template using the `dump` function.
+
+```jinja
+{{model|dump}}
+```
+
 ## License
 
 Licensed under the Apache License, Version 2.0 (the "License");