update readme

README.md

@@ -18,14 +18,38 @@ first thing, import the main header file
 #import "FEPopupMenuController.h"
 ```
 
-then, you can using `FEPopupMenuItem` initialize `FEPopupMenuController` , support **text** or **text&icon**
+then, you can using `FEPopupMenuItem` initialize `FEPopupMenuController` , support **text** or **text&icon** (icon size 15x15 point)
 
 ``` 
-    FEPopupMenuItem *item = [[FEPopupMenuItem alloc] initWithTitle:@"title" iconImage:image action:^{ NSLog(@"selected item1..."); }];
-    FEPopupMenuController *popupMenuController = [[FEPopupMenuController alloc] initWithItems:@[item]];
+FEPopupMenuItem *item = [[FEPopupMenuItem alloc] initWithTitle:@"title" iconImage:image action:^{
+    NSLog(@"selected item1...");
+}];
+FEPopupMenuController *popupMenuController = [[FEPopupMenuController alloc] initWithItems:@[item]];
 ```
 
-Suggest : The title can not be longer than four characters.
+Suggest : The title can not be longer than four characters. and item not too much.
+
+show time
+
+``` 
+[popupMenuController showInViewController:self atPosition:CGPointMake(100,100);
+```
+
+dismiss
+
+```
+[popupMenuController dismiss];
+```
+
+### Other
+
+- ##### change title color of each item
+
+  You can set `titleColor` to change the title color of each FEPopupMenuItem, respectively.
+
+- ##### Screen Rotation
+
+  You can call the `moveContentViewToPosition` method to change the location of the nemu in real time.(see demo)
 
 ### Cocoapods