Adding constant for "email" key.

Author: ScoutHarris

WordPressKit/WordPressComRestApi.swift

@@ -35,6 +35,7 @@ open class WordPressComRestApi: NSObject {
     @objc public static let ErrorKeyErrorCode       = "WordPressComRestApiErrorCodeKey"
     @objc public static let ErrorKeyErrorMessage    = "WordPressComRestApiErrorMessageKey"
     @objc public static let ErrorKeyErrorData       = "WordPressComRestApiErrorDataKey"
+    @objc public static let ErrorKeyErrorDataEmail  = "email"
 
     @objc public static let LocaleKeyDefault        = "locale"  // locale is specified with this for v1 endpoints
     @objc public static let LocaleKeyV2             = "_locale" // locale is prefixed with an underscore for v2