Update README.md

kishikawakatsumi · kishikawakatsumi · commit 0944db662e6f · 2014-02-14T04:17:33.000+09:00
diff --git a/README.md b/README.md
@@ -37,20 +37,23 @@ JSContext *context = [JSBScriptingSupport globalContext];
 ```
 
 1. Retrieve the `JSContext` instance from `JSBScriptingSupport`.
-The context includes a lot of system classes that has been `JSExports` adopted.
-```objc
+  The context includes a lot of system classes that has been `JSExports` adopted.
+
+  ```objc
 JSContext *context = [JSBScriptingSupport globalContext];
 ```
 
 2. Add `JSExports` adopted classes each framework if needed.
-By default, `Foundation`, `UIKit`, `QuartzCore` frameworks are included.
-```objc
+  By default, `Foundation`, `UIKit`, `QuartzCore` frameworks are included.
+
+  ```objc
 [context addScriptingSupport:@"MapKit"];
 [context addScriptingSupport:@"MessageUI"];
 ```
 
 3. It is ready to use, writing appliction code and evaluate in JavaScript.
-```
+
+  ```objc
 [context evaluateScript:
  @"var window = UIWindow.new();"
  @"window.frame = UIScreen.mainScreen().bounds;"
@@ -59,6 +62,26 @@ By default, `Foundation`, `UIKit`, `QuartzCore` frameworks are included.
 ];
 ```
 
+#### Manually setting up a new JSContext instance
+1. Create new `JSContext` instance instead using `globalContext`.
+  You can separate JavaScript environments to use multiple contexts.
+
+  ```objc
+JSContext *context = [[JSContext alloc] init];
+```
+
+2. Add `JSExports` adopted classes each framework if needed.
+  `Foundation`, `UIKit` and `QuartzCore` frameworks MUST be added.
+
+  ```objc
+[context addScriptingSupport:@"Foundation"];
+[context addScriptingSupport:@"UIKit"];
+[context addScriptingSupport:@"QuartzCore"];
+[context addScriptingSupport:@"Accounts"];
+[context addScriptingSupport:@"Social"];
+```
+
+
 ### Syntax / Naming conventions
 
 **Class name**
