Add block remplacement

Example:

Template =>
<!-- BEGIN testBlock -->
<li><a href="http://{LINK}">{NAME}</a></li>
<!-- END testBlock -->

PHP =>
addBlockExpression(
'testBlock',
array(
array('NAME' => 'Google', 'LINK' => 'www.google.com'),
array('NAME' => 'NeoTeo', 'LINK' => 'www.neoteo.com')
)
);