Expose classes and members to Objective-C

[JungHsuan]

Purpose:

Exposing swift classes and members to Objective-C.

Changes:

1. Adding @objcMembers to public classes.
2. Make WIdentify an internal class as it can only be accessed from WTracker

Expected Behavior:

1. Public methods can be accessed in an Objective-C code.
2. WIdentify is not available for public access.

How To Verify it:

1. Trying to use WIdentify directly, there should be a compile error of "cannot find WIdentify" or "undeclared identifier WIdentify"
2. Trying to call API in Objective-C, you can directly add the following code in AppDelegate.m in AIQUA project. Remember to import the headers in the file:

   #import "WoopraSDK/WoopraSDK.h"
   #import "WoopraSDK/WoopraSDK-Swift.h"

• Set domain and visitor

  [WTracker shared].domain = @"<your-domain>";
  [[WTracker shared].visitor addWithProperty:@"name" value:@"John Doe"];
  [[WTracker shared].visitor addWithProperty:@"email" value:@"JohnDoe@appier.com"];

• Track an event

  WEvent* event = [WEvent eventWithName:@"app_launch"];
  [event addWithProperty:@"event-name" value:@"app_launch"];
  [[WTracker shared] trackEvent:event];

• Identify and push

  [[WTracker shared].visitor addWithProperty:@"name" value:@"John Doe-identified"];
  [[WTracker shared] push];

• Check if you can see the events on the dashboard.