Possibly save 1 hour of your time: This is a quick reference guide for getting the SSIS project template within Visual Studio 2015.
Download link here https://go.microsoft.com/fwlink/?linkid=849393
Once you download you can just double click to run the installation. You can check the following features that you need. I need SSIS so I will check SQL Server Integration Services.
Then you will have to agree to license terms.
If you select all features, it will take about 1 hour to install.
Once install is completed, open Visual Studio 2015, and go to File > New Project, you should be able to select the following Business Intelligence > Integration Services > Integration Services Project template.