Bug fixing in getting mouse position for issue #27.

BuildAndPublish.md

@@ -0,0 +1,39 @@
+# Build and Publish
+Steps to build and publish the npm package.
+
+## Update information in package.json
+
+As a minimum, update the version number in package.json
+
+## Commands
+Open a command prompt in the project root directory and enter the following commands:
+
+Build the package
+```console
+npm run build:prod
+```
+
+Pack the package
+```console
+npm pack
+```
+
+Login to npm
+```console
+npm login
+```
+Obviously you must be registered with npm :smiley:.  
+This command will open a browser window.
+
+Publish the package
+```console
+npm publish --access public
+```
+
+Check that it has been published
+```console
+npm info @philjollans/fretboard.js
+```
+
+Alternatively visit:  
+https://www.npmjs.com/package/@philjollans/fretboard.js