How do I run Testacular on Windows?

Working on Windows (x86 version, not cygwin)

I was able to install Testacular

npm list -g

C:\Users\myName\AppData\Roaming\npm
└─┬ testacular@0.4.0
  etc....

But when I run testacular get ...

'testacular' is not recognized as an internal or external command, operable program or batch file.

I have tried adding bin to path..

SET PATH=%PATH%;C:\Users\myName\AppData\Roaming\npm\node_modules\testacular\bin

but it doesn't work, there does not appear to be an executeable or batch file (testacular.bat, testacular.exe)

What am I missing?

Michael