get Karma working

I don't really understand this yet. It's something like so:

1. In PowerShell navigate to the folder holding your node modules folder and type: npm install –g karma
2. Type "View Advanced System Settings" at the "Ask me anything" bar in Windows 10.
3. From the "Advanced" tab go to "Environment Variables"
4. click "New..." at the lower half of the pane that appears to add a new system variable
5. add a variable with a variable name of CHROME_BIN and variable value of C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
6. at C:\Users\thomas_jaeschke\AppData\Roaming\npm you're going to have to add some plugins too