Ok,
E:\Ionic Data\IONIC2\GetToGetherAPI>cordova requirements
Requirements check results for android:
Java JDK: installed 1.8.0
Android SDK: installed true
Android target: installed android-19,android-21,android-22,android-23,android-25,Google Inc.:Google APIs:22,Google Inc.:Google APIs:23
Gradle: installed
Requirements check results for ios:
Apple OS X: not installed
Cordova tooling for iOS requires Apple OS X
Requirements check results for windows:
Windows OS: installed Windows 10
MSBuild Tools: not installed
MSBuild tools v.14.0 not found. Please install Visual Studio 2015 Community from https://www.visualstudio.com/downloads/download-visual-studio-vs
Visual Studio: not installed
Required version of Visual Studio not found. Please install Visual Studio 2015 Community from https://www.visualstudio.com/downloads/download-visual-studio-vs
Windows SDK: not installed
Windows SDK not found. Ensure that you have installed Windows 10.0 SDK along with Visual Studio or install Windows 10.0 SDK separately from https://dev.windows.com/en-us/downloads
Windows Phone SDK: not installed
Windows Phone SDK not found. Ensure that you have installed Windows Phone 10.0 SDK along with Visual Studio or install Windows Phone 10.0 SDK separately from https://dev.windows.com/develop/download-phone-sdk
Error: Some of requirements check failed