add composer's vendor directory

vendor/symfony/yaml/Tests/Fixtures/YtsBlockMapping.yml

@@ -0,0 +1,51 @@
+---
+test: One Element Mapping
+brief: |
+    A mapping with one key/value pair
+yaml: |
+    foo: bar
+php: |
+    array('foo' => 'bar')
+---
+test: Multi Element Mapping
+brief: |
+    More than one key/value pair
+yaml: |
+    red: baron
+    white: walls
+    blue: berries
+php: |
+    array(
+     'red' => 'baron',
+     'white' => 'walls',
+     'blue' => 'berries',
+    )
+---
+test: Values aligned
+brief: |
+    Often times human editors of documents will align the values even
+    though YAML emitters generally don't.
+yaml: |
+    red:   baron
+    white: walls
+    blue:  berries
+php: |
+    array(
+     'red' => 'baron',
+     'white' => 'walls',
+     'blue' => 'berries',
+    )
+---
+test: Colons aligned
+brief: |
+    Spaces can come before the ': ' key/value separator.
+yaml: |
+    red   : baron
+    white : walls
+    blue  : berries
+php: |
+    array(
+     'red' => 'baron',
+     'white' => 'walls',
+     'blue' => 'berries',
+    )