docs/library/ujson: Document dump() and load() functions.

docs/library/ujson.rst

@@ -12,10 +12,23 @@ data format.
 Functions
 ---------
 
+.. function:: dump(obj, stream)
+
+   Serialise *obj* to a JSON string, writing it to the given *stream*.
+
 .. function:: dumps(obj)
 
    Return *obj* represented as a JSON string.
 
+.. function:: load(stream)
+
+   Parse the given *stream*, interpreting it as a JSON string and
+   deserialising the data to a Python object.  The resulting object is
+   returned.
+
+   Parsing continues until end-of-file is encountered.
+   A :exc:`ValueError` is raised if the data in *stream* is not correctly formed.
+
 .. function:: loads(str)
 
    Parse the JSON *str* and return an object.  Raises :exc:`ValueError` if the