reorganized extension directories.

extensions/composer/composer.json

@@ -21,6 +21,7 @@
 	"autoload": {
 		"psr-0": { "yii\\composer\\": "" }
 	},
+	"target-dir": "yii/composer",
 	"extra": {
 		"class": "yii\\composer\\Plugin"
 	},

extensions/smarty/composer.json

@@ -24,5 +24,6 @@
 	},
 	"autoload": {
 		"psr-0": { "yii\\smarty\\": "" }
-	}
+	},
+	"target-dir": "yii/smarty"
 }

extensions/twig/composer.json

@@ -24,5 +24,6 @@
 	},
 	"autoload": {
 		"psr-0": { "yii\\twig\\": "" }
-	}
+	},
+	"target-dir": "yii/twig"
 }