Update documentation for list/first.

Signed-off-by: Kevin McDermott <[email protected]>

ext/README.md

@@ -500,6 +500,36 @@ Examples:
 	].sortBy(e, e.score).map(e, e.name)
 	== ["bar", "foo", "baz"]
 
+### Last
+
+**Introduced in the OptionalTypes library version 2**
+
+Returns an optional with the last value from the list or `optional.None` if the
+list is empty.
+
+    <list(T)>.list() -> <Optional(T)>
+
+Examples:
+
+    [1, 2, 3].list().value() == 3
+    [].last().orValue('test') == 'test'
+
+This is syntactic sugar for list[list.size()-1].
+
+### First
+
+**Introduced in the OptionalTypes library version 2**
+
+Returns an optional with the first value from the list or `optional.None` if the
+list is empty.
+
+    <list(T)>.first() -> <Optional(T)>
+
+Examples:
+
+     [1, 2, 3].first().value() == 1
+     [].first().orValue('test') == 'test'
+
 ## Sets
 
 Sets provides set relationship tests.