Fixed issue with https://gist.github.com/mikeschinkel/5028467 plus some commenting.
Added an __if_string__ meta property and code to process it.
Fixed a few bugs from last push.
Created Typed_Config->_is_meta_property() function to encapsulate the preg_match() for recognizing meta properties.
Created Typed_Config->strip_meta() function to strip meta properties if needed.
Created Typed_Config->_instantiate_array_of_objects() handled indexed arrays instead of just keyed arrays.
Changed Typed_Config_Loader::load() to be able to load from both a JSON file as well as directly from a JSON string.
Added a new, reasonable example file and removed old example files that were no longer valid.