Implement this method to execute some tasks when Autodesk Revit starts. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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Parameters
- application
-  Type:  Autodesk.Revit.ApplicationServices ControlledApplication  
 Handle to the Revit Application object.
Return Value
Indicates if the external db application completes its work successfully.Remarks
 Typically, event handlers and updaters are registered in this method.