Instructions to run on Windows incorrect

[kylemd]

Describe the bug
Syntax errors in runfiles necessary to start Dexcalibur

To reproduce / to understand

git clone
cd .\dexcalibur
npm -g install .
node C:\Users\kyle\AppData\Roaming\npm\node_modules\dexcalibur\dexcalibur

Solution
Dexcalibur needs to be started with node .\dexcalibur.js (if installed from local git clone like as above)

Expected behavior
For dexcalibur to successfully run

Error log

C:\Users\kyle\Development\_Builds\dexcalibur\dexcalibur:5
if [ $# = 2 ] && [ $1 = "--max-heap" ] && [ $2 -ge 1024 ]
   ^

SyntaxError: Unexpected token '['
    at wrapSafe (internal/modules/cjs/loader.js:915:16)
    at Module._compile (internal/modules/cjs/loader.js:963:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)
    at internal/main/run_main_module.js:17:47

Desktop (please complete the following information):

• OS: Windows 11
• Node JS version: node --version v12.22.12 npm --version 6.14.16
• Dexcalibur version (see 'package.json' or output) : master