Tweak docs for converting from raw JS.

leebyron · leebyron · commit bcc932f49305 · 2017-10-16T21:18:35.000-07:00
Closes immutable-js#578
diff --git a/README.md b/README.md
@@ -235,20 +235,25 @@ alpha.map((v, k) => k.toUpperCase()).join();
 // 'A,B,C,D'
 ```
 
-### Accepts raw JavaScript objects.
+### Convert from raw JavaScript objects and arrays.
 
 Designed to inter-operate with your existing JavaScript, Immutable.js
 accepts plain JavaScript Arrays and Objects anywhere a method expects an
 `Collection`.
 
 <!-- runkit:activate -->
 ```js
-const { Map } = require('immutable')
+const { Map, List } = require('immutable')
 const map1 = Map({ a: 1, b: 2, c: 3, d: 4 })
 const map2 = Map({ c: 10, a: 20, t: 30 })
 const obj = { d: 100, o: 200, g: 300 }
 const map3 = map1.merge(map2, obj);
 // Map { a: 20, b: 2, c: 10, d: 100, t: 30, o: 200, g: 300 }
+const list1 = List([ 1, 2, 3 ])
+const list2 = List([ 4, 5, 6 ])
+const array = [ 7, 8, 9 ]
+const list3 = list1.concat(list2, array)
+// List [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ]
 ```
 
 This is possible because Immutable.js can treat any JavaScript Array or Object
