diff --git a/LPAlbum.podspec b/LPAlbum.podspec
index 368d639..f6fc753 100644
--- a/LPAlbum.podspec
+++ b/LPAlbum.podspec
@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
   s.name         = "LPAlbum"
-  s.version      = "0.0.3"
+  s.version      = "0.0.4"
   s.summary      = "Can a decent enough photo album, photo album multi-select"
 
   s.homepage     = "https://github.com/loopeer/LPAlbum"
diff --git a/LPAlbum/Controllers/LPAlbum.swift b/LPAlbum/Controllers/LPAlbum.swift
index 1d2dabc..383501e 100644
--- a/LPAlbum/Controllers/LPAlbum.swift
+++ b/LPAlbum/Controllers/LPAlbum.swift
@@ -45,8 +45,9 @@ public class LPAlbum: UIViewController {
             let itemSize = (self.collectionView.collectionViewLayout as! UICollectionViewFlowLayout).itemSize
             let scale = UIScreen.main.scale
             let targetSize = CGSize(width: itemSize.width * scale, height: itemSize.height * scale)
-            AlbumManager.imageManager.startCachingImages(for: self.allAssets, targetSize: targetSize, contentMode: .aspectFill, options: nil)
-            
+            DispatchQueue.global().async {
+                AlbumManager.imageManager.startCachingImages(for: self.allAssets, targetSize: targetSize, contentMode: .aspectFill, options: nil)
+            }
         }
     }
     
@@ -233,7 +234,7 @@ extension LPAlbum: UICollectionViewDelegate, UICollectionViewDataSource {
                 var newModel = model
                 newModel.isSelect = !$0
                 self.albumModels = self.albumModels.change(assetModel: newModel)
-                self.collectionView.reloadItems(at: [indexPath])
+                UIView.performWithoutAnimation { self.collectionView.reloadItems(at: [indexPath]) }
             }
             if #available(iOS 9.0, *) {
                 guard traitCollection.forceTouchCapability == .available else { return cell }
diff --git a/LPAlbum/Controllers/PhotosBrowerController.swift b/LPAlbum/Controllers/PhotosBrowerController.swift
index e12e912..e40a473 100644
--- a/LPAlbum/Controllers/PhotosBrowerController.swift
+++ b/LPAlbum/Controllers/PhotosBrowerController.swift
@@ -24,12 +24,12 @@ class PhotosBrowerController: UIViewController {
         super.viewDidLoad()
         setupUI()
         refreshNavigation()
-        addCache()
+//        addCache()
     }
     
     deinit {
         print("\(self) deinit")
-        removeCache()
+//        removeCache()
     }
 }
 
diff --git a/README.md b/README.md
index e2c9da6..d4cca5c 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,8 @@ public extension LPAlbum {
         public static var normalBox: UIImage = Bundle.imageFromBundle("circle_normal")!
         /// 选中的选择框图片
         public static var selectedBox: UIImage = Bundle.imageFromBundle("circle_selected")!
+        /// 选择框box的可点击区域向外的扩展size
+        public static var boxEdgeInsets = UIEdgeInsets(top: -5, left: -5, bottom: -5, right: -5)
     }
 }
 
@@ -132,7 +134,7 @@ Specify LPAlbum into your project's Podfile:
 ```ruby
 # source 'https://github.com/CocoaPods/Specs.git'
 
-platform :ios, '8.0'
+platform :ios, '9.0'
 use_frameworks!
 
 target '<Your App Target>' do
@@ -148,19 +150,6 @@ $ pod install
 ```
 
 
-### 2. Carthage
-
-[Carthage](https://github.com/Carthage/Carthage) is a simple, decentralized
-dependency manager for Cocoa.
-
-Specify LPAlbum into your project's Carthage:
-
-
-```
-github "loopeer/LPAlbum" ~> 1.0.1
-
-```
-