diff --git a/.swift-version b/.swift-version
new file mode 100644
index 0000000..9f55b2c
--- /dev/null
+++ b/.swift-version
@@ -0,0 +1 @@
+3.0
diff --git a/HJDanmaku.podspec b/HJDanmaku.podspec
index 9ac8ab1..7e422de 100644
--- a/HJDanmaku.podspec
+++ b/HJDanmaku.podspec
@@ -17,7 +17,7 @@ Pod::Spec.new do |s|
 
   s.name         = "HJDanmaku"
   s.version      = "2.0.0"
-  s.summary      = "A short description'"
+  s.summary      = "A high performance danmaku engine for iOS"
 
   # This description is used to generate tags and improve search results.
   #   * Think: What does it do? Why did you write it? What is the focus?
@@ -25,7 +25,7 @@ Pod::Spec.new do |s|
   #   * Write the description between the DESC delimiters below.
   #   * Finally, don't worry about the indent, CocoaPods strips it!
   s.description  = <<-DESC
-  A short description'
+  A high performance danmaku engine for iOS, http://www.olinone.com/?p=186
                    DESC
 
   s.homepage     = "https://github.com/panghaijiao/HJDanmakuDemo"
diff --git a/HJDanmaku/HJDanmaku.h b/HJDanmaku/HJDanmaku.h
index 2b9469b..858c20d 100644
--- a/HJDanmaku/HJDanmaku.h
+++ b/HJDanmaku/HJDanmaku.h
@@ -8,6 +8,3 @@
 
 #import "HJDanmakuDefines.h"
 #import "HJDanmakuView.h"
-#import "HJDanmakuModel.h"
-#import "HJDanmakuCell.h"
-#import "HJDanmakuConfiguration"
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..bcbb999
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2015 庞海礁
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.