Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/wp-pagenavi/scb/load-composer.php

@@ -0,0 +1,12 @@
+<?php
+
+/**
+ * Pass through version to use when Composer handles classes load.
+ *
+ * @param callable $callback
+ */
+function scb_init( $callback = null ) {
+	if ( $callback ) {
+		call_user_func( $callback );
+	}
+}