Added scripts in package.json to fix installation (#411)

* Added scripts in package.json to fix installation

* Update setup script

* Update README.md

Add installation instructions for windows

* Update README.md

added headers for windows and Unix

README.md

@@ -45,8 +45,20 @@ A diagram of this running 5 steps on a single sample image may help explain how
 
 ## Installation
 
-This library works in the browser, in Node, and on the commandline (CLI), which we think is great. You can start a local environement to test the UI with `npm start`
-On Unix based environments the command should be run as root user using `sudo npm start` and on windows the command should be run as administrator.
+This library works in the browser, in Node, and on the commandline (CLI), which we think is great.
+
+### Unix based platforms
+You can setup a local environement to test the UI with `sudo npm setup` followed by `npm start` 
+
+### Windows
+Our npm scripts do not support windows shells, please run the following snippet in powershell.
+```powershell
+npm i ; npm i -g grunt grunt-cli ; grunt serve
+```
+In case of a port conflict please run the folowing
+```powershell
+npm i -g http-server ; http-server -p 3000
+```
 
 ### Browser
 

package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "debug": "TEST=true node ./index.js -i ./examples/images/monarch.png -s invert",
     "test": "TEST=true tape test/**/*.js test/*.js | tap-spec; browserify test/modules/image-sequencer.js test/modules/chain.js test/modules/meta-modules.js test/modules/replace.js test/modules/import-export.js test/modules/run.js test/modules/dynamic-imports.js | tape-run --render=\"tap-spec\"",
-    "start": "npm i\nnpm i -g grunt grunt-cli\ngrunt serve"
+    "setup": "npm i && npm i -g grunt grunt-cli",
+    "start": "grunt serve"
   },
   "repository": {
     "type": "git",