AppStartupTimeTracker 0.2 API

```
public class AppStartupTimeTracker

                    
```
This class is responsible for app startup tracking & measures the time since the earliest possible moment of the app's process creation till the app's first frame is drawn.
Startup time is measured according to the Google's definition of Cold App Startup Time

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public interface`	`AppStartupTimeTracker.Listener`	Listener to be invoked when the app's startup time is ready

Field Summary

Fields
Modifier and Type	Field	Description
`public final static AppStartupTimeTracker`	`INSTANCE`

Method Summary

Modifier and Type	Method	Description
`final static Unit`	`register(Application application, AppStartupTimeTracker.Listener listener)`	Register a callback invoked when the app's cold startup time is obtained.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - register
```
 final static Unit register(Application application, AppStartupTimeTracker.Listener listener)
```
    Register a callback invoked when the app's cold startup time is obtained. The method must be called as early as possible from Application.onCreate.
    
    Parameters:
    
    application - current Application instance
    
    listener - callback to be invoked as soon as startup time is ready