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-USAGE
-==========
+# ChimpKit 3.0.0
 
-Drag the ChimpKit3 folder into your project.  Import "ChimpKit.h".
+ChimpKit is an API wrapper for the [MailChimp API 2.0](http://www.mailchimp.com/api).
+
+##Requirements
+
+A MailChimp account and API key. You can see your API keys [here](http://admin.mailchimp.com/account/api).
+
+ChimpKit includes uses ARC. If your project doesn't use ARC, you can enable it per file using the `-fobjc-arc` compiler flag under "Build Phases" and "Compile Sources" on your project's target in Xcode.
+
+##Installation
+
+There are two ways to use ChimpKit.
+
+Using [Cocoapods](cocoapods.org):
+
+    pod "ChimpKit"
+
+Add ChimpKit as a submodule of your git repo by doing something like:
+
+    cd myrepo
+    git submodule add https://github.com/mailchimp/ChimpKit3.git Libs/ChimpKit
+
+##Usage
+
+First, set an API key:
+
+    [[ChimpKit sharedKit] setApiKey:apiKey];
+
+You can now make requests.
+
+Using a block:
+
+    NSDictionary *params = @{@"id": listId, @"email": @{@"email": @"foo@example.com"}, @"merge_vars": @{@"FNAME": @"Freddie", @"LName":@"von Chimpenheimer"}};
+    [[ChimpKit sharedKit] callApiMethod:@"lists/subscribe" withParams:params andCompletionHandler:^(ChimpKitRequest *request, NSError *error) {
+        NSLog(@"HTTP Status Code: %d", request.response.statusCode);
+        NSLog(@"Response String: %@", request.responseString);
+      
+        if (error) {
+           //Handle connection error
+            NSLog(@"Error, %@", error);
+            dispatch_async(dispatch_get_main_queue(), ^{
+                //Update UI here
+            });
+        } else {
+            NSError *parseError = nil;
+            id response = [NSJSONSerialization JSONObjectWithData:request.responseData
+                                                          options:0
+                                                            error:&parseError];
+            if ([response isKindOfClass:[NSDictionary class]]) {
+                id email = [response objectForKey:@"email"];
+                if ([email isKindOfClass:[NSString class]]) {
+                    //Successfully subscribed email address
+                    dispatch_async(dispatch_get_main_queue(), ^{
+                        //Update UI here
+                    });
+                }
+            }
+        }
+    }];
+
+Using the delegate pattern call:
+
+    NSDictionary *params = @{@"id": listId, @"email": @{@"email": @"foo@example.com"}, @"merge_vars": @{@"FNAME": @"Freddie", @"LName":@"von Chimpenheimer"}};
+    [[ChimpKit sharedKit] callApiMethod:@"lists/subscribe" withParams:params andDelegate:self];
+
+    And implement:
+
+    - (void)ckRequestSucceeded:(ChimpKitRequest *)aRequest {
+        NSLog(@"HTTP Status Code: %d", aRequest.response.statusCode);
+        NSLog(@"Response String: %@", aRequest.responseString);
+    
+        NSError *parseError = nil;
+        id response = [NSJSONSerialization JSONObjectWithData:request.responseData
+                                                      options:0
+                                                        error:&parseError];
+        if ([response isKindOfClass:[NSDictionary class]]) {
+            id email = [response objectForKey:@"email"];
+            if ([email isKindOfClass:[NSString class]]) {
+                //Successfully subscribed email address
+                dispatch_async(dispatch_get_main_queue(), ^{
+                    //Update UI here
+                });
+            }
+        }
+    }
+
+    - (void)ckRequestFailed:(ChimpKitRequest *)aRequest andError:(NSError *)anError {
+        //Handle connection error
+        NSLog(@"Error, %@", anError);
+        dispatch_async(dispatch_get_main_queue(), ^{
+            //Update UI here
+        });
+    }
+
+
+Calling other API endpoints works similarly. Read the API [documentation](http://www.mailchimp.com/api/2.0) for details.
+
+###Blocks can be called from a background Queue
+
+The examples above use dispatch_async to call back onto the main queue after parsing the response. If you've set `shouldUseBackgroundThread` to `YES` then ChimpKit will call your block from a background queue so you can parse the JSON response with low impact on interface responsiveness. You should dispatch_* back to the main queue before updating your UI as shown above. You can enable this behavior like so:
+
+    [[ChimpKit sharedKit] setShouldUseBackgroundThread:YES];
+
+###Canceling Requests
+
+You can cancel an in-progress request by passing the "cancel" message:
+
+    [ck cancel];
+
+
+### Controlling Timeout
+
+ChimpKit defaults to a 10 second timeout. You can change that (globally) to 30 seconds like so:
+
+    [[ChimpKit sharedKit] setTimeoutInterval:30.0f];
+
+
+### MailChimp now supports [OAuth2](http://apidocs.mailchimp.com/oauth2/) and so does ChimpKit:
+
+An example of logging in via OAuth is provided in the sample application. See `ViewController.m`.
+
+##Copyrights
+
+* Copyright (c) 2010-2014 The Rocket Science Group. Please see LICENSE.txt for details.
+* MailChimp (c) 2001-2014 The Rocket Science Group.
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