Create README.md

Author: lch872

README.md

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+# OneWaySDK iOS Integration Guide
+|Version | Update | Date |
+| :--- | :--- | :--- |
+| 1.2.1 | 1.support Bitcode  2.support Xcode 7 3.Modify some parameters| 2017.03.09 |
+| 1.2.0 | Fix some Bugs | 2017.01.09 |
+
+When you read this document, we assume that you already have a basis of iOS app development experience, and to understand the related basic concepts.
+
+## Integration SDK
+**1.You must be set parameters ``` –all_load ``` in options “Other linker flags”.**
+
+
+
+```objective-c
+// Or you can use following parameters if there is any conflict
+-force_load $(SRCROOT)/OneWaySDK/OneWaySDK.a  //According to your SDK path
+```
+
+**2. Import OneWaySDK.h and Implement OneWaySDKDelegate in AppDelegate.h :**
+
+``` objective-c
+#import "OneWaySDK.h"
+@interface AppDelegate : UIResponder <UIApplicationDelegate,OneWaySDKDelegate>
+```
+<Br>**3.Add the following methods to implement the required delegates on the view controller class :**
+
+``` objective-c
+- (void)oneWaySDKReady:(NSString *)placementId;
+- (void)oneWaySDKDidError:(OneWaySDKError)error withMessage:(NSString *)message;
+- (void)oneWaySDKDidStart:(NSString *)placementId;
+- (void)oneWaySDKDidFinish:(NSString *)placementId withFinishState:(OneWaySDKFinishState)state;
+```
+
+<Br>**4.The following code will initialize SDK :**
+
+``` objective-c
+- (BOOL)application:(UIApplication *)application 
+                didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
+
+[OneWaySDK initialize: @"Your PublishId" delegate:self];
+    //when you create a applications in our platform, you will get a publish ID.
+
+return YES;
+}
+```
+
+
+<Br>**5.The following code will show an ad :**
+
+Show default placement :
+
+``` objective-c
+if ([OneWaySDK isReady]) {
+    [OneWaySDK show:self];
+    //You can set default PlacementID in our developer platform.
+}
+```
+