Add support for sending magic links to inexistent accounts

Sources/WordPressKit/Services/AccountServiceRemoteREST.h

@@ -17,6 +17,21 @@ extern MagicLinkFlow const MagicLinkFlowSignup;
 
 @interface AccountServiceRemoteREST : ServiceRemoteWordPressComREST <AccountServiceRemote>
 
+/**
+*  @brief      Request an authentication link be sent to the email address provided.
+*
+ *  @param      success     The block that will be executed on success.  Can be nil.
+ *  @param      failure     The block that will be executed on failure.  Can be nil.
+ */
+- (void)requestWPComAuthLinkForEmail:(NSString *)email
+                            clientID:(NSString *)clientID
+                        clientSecret:(NSString *)clientSecret
+                              source:(MagicLinkSource)source
+                         wpcomScheme:(NSString *)scheme
+             createAccountIfNotFound:(BOOL)createAccountIfNotFound
+                             success:(void (^)(void))success
+                             failure:(void (^)(NSError *error))failure;
+
 /**
 *  @brief      Request an authentication link be sent to the email address provided.
 *

Sources/WordPressKit/Services/AccountServiceRemoteREST.m

@@ -245,17 +245,19 @@ - (void)requestWPComAuthLinkForEmail:(NSString *)email
                         clientSecret:(NSString *)clientSecret
                               source:(MagicLinkSource)source
                          wpcomScheme:(NSString *)scheme
+             createAccountIfNotFound:(BOOL)createAccountIfNotFound
                              success:(void (^)(void))success
                              failure:(void (^)(NSError *error))failure
 {
     NSString *path = [self pathForEndpoint:@"auth/send-login-email"
                                withVersion:WordPressComRESTAPIVersion_1_3];
-    
+
     NSDictionary *extraParams = @{
         MagicLinkParameterFlow: MagicLinkFlowLogin,
-        MagicLinkParameterSource: source
+        MagicLinkParameterSource: source,
+        @"create_account": createAccountIfNotFound ? @"true" : @"false"
     };
-    
+
     [self requestWPComMagicLinkForEmail:email
                                    path:path
                                clientID:clientID
@@ -266,6 +268,24 @@ - (void)requestWPComAuthLinkForEmail:(NSString *)email
                                 failure:failure];
 }
 
+- (void)requestWPComAuthLinkForEmail:(NSString *)email
+                            clientID:(NSString *)clientID
+                        clientSecret:(NSString *)clientSecret
+                              source:(MagicLinkSource)source
+                         wpcomScheme:(NSString *)scheme
+                             success:(void (^)(void))success
+                             failure:(void (^)(NSError *error))failure
+{
+    [self requestWPComAuthLinkForEmail:email
+                              clientID:clientID
+                          clientSecret:clientSecret
+                                source:source
+                           wpcomScheme:scheme
+               createAccountIfNotFound:NO
+                               success:success
+                               failure:failure];
+}
+
 - (void)requestWPComSignupLinkForEmail:(NSString *)email
                               clientID:(NSString *)clientID
                           clientSecret:(NSString *)clientSecret