Merge pull request #221 from dikejk/doc/fix_EACCESS_on_windows

Added note on how to fix EACCESS error for PS and CMD users

README.md

@@ -29,11 +29,12 @@ The `--global` option installs this module globally so that you can run it as a
 
 #### Having issues with installation?
 
-If you get an `EACCESS` error, the simplest way to fix this is to rerun the command, prefixed with sudo:
+If you get an `EACCESS` error, the simplest way to fix this is to rerun the command, in either of the following ways:
 
-```
-sudo npm install --global javascripting
-```
+- On unix shells, prefix the command with sudo
+> `sudo npm install --global javascripting`
+
+- On Windows and if using either PowerShell or CMD, ensure you open the shell with administrator privilege.
 
 You can also fix the permissions so that you don't have to use `sudo`. Take a look at this npm documentation:
 https://docs.npmjs.com/getting-started/fixing-npm-permissions