Read now handles multiple documents

examples/multiple_docs.yaml

@@ -0,0 +1,15 @@
+a: Easy! as one two three
+b:
+  c: 2
+  d: [3, 4]
+  e:
+    - name: fred
+      value: 3
+    - name: sam
+      value: 4
+---
+another:
+  document: here
+---
+wow: 
+  - here is another

examples/sample.yaml

@@ -6,4 +6,4 @@ b:
     - name: fred
       value: 3
     - name: sam
-      value: 4
+      value: 4