Prefix the cli test with 'node' so it works on windows

Shouldnt provide any issues for other systems I hope

test/node-tests/cli/cli.test.js

@@ -4,7 +4,7 @@ const path = require('path')
 const cp = require('child_process')
 
 function run (args, done) {
-  cp.exec('bin/cli.js ' + args, function (e, r) {
+  cp.exec('node bin/cli.js ' + args, function (e, r) {
     done(e, r.replace(/\n$/g, ''))
   })
 }