Update PHP-yii2 installation

frameworks/PHP/php-yii2/README.md

@@ -2,6 +2,11 @@
 
 This is the Yii2 portion of a [benchmarking test suite](../) comparing a variety of web development platforms.
 
+This uses PHP's composer for dependency resolution. Note 
+that [issue 5083](https://github.com/yiisoft/yii2/issues/5083)
+affects the `composer.json` file defined here (also see 
+[this](https://github.com/francoispluchino/composer-asset-plugin/issues/29) and [this](https://stackoverflow.com/questions/25882271/cannot-update-yii2-via-composer-bower-asset-jquery-could-not-be-found))
+
 ### JSON Encoding Test
 Uses the PHP standard [JSON encoder](http://www.php.net/manual/en/function.json-encode.php).
 

frameworks/PHP/php-yii2/install.sh

@@ -3,4 +3,6 @@
 fw_depends php nginx composer
 
 PHP_HOME=${IROOT}/php-5.5.17
-cd $TROOT && ${PHP_HOME}/bin/php $IROOT/composer.phar --no-interaction install
+${PHP_HOME}/bin/php $IROOT/composer.phar install \
+  --no-interaction --working-dir $TROOT \
+  --no-progress --optimize-autoloader