[Feature] Package the project as a ng library and more

[tinesoft]

Hi @cornflourblue ,

Thanks for this project! I was about to write something very similar, when i came accross your blog. The project has almost everything i needed and is very well written, Good job 👍

One little caveat though, the project is a bit cumbersome to integrate in a real-world ng project (need to copy/paste files around :(, ... )

So i'm submitting this PR, which basically makes a library out-of your code, for easy integration in ng projects, like any other angular libraries.

This was pretty straightforward, using a tool i created for that exact purpose.

So, what you'll get out of the box:

• AOT compatible distributed files
• publication to npm --> allows installation via npm install <lib-name>
• integrated demo app to showcase the library + deployment on project's github page
• source documentation via compodoc
• integration with Travis CI
• ready-to-use build system with gulp
• and more

Here is what the demo app looks like (notice the brand new logo :) ) :

A bit more info:

• i named the library ngx-alert-notifications, to make @IgorMinar happy! (#ItsJustAngular)
• i prefixed most classes by Nga and components by nga to follow naming conventions and best practices (see ng-bootstrap project for example)

To play around locally with the PR:

• yarn or npm install from root folder
• gulp build to build the library
• yarn or npm install from demo/ folder
• gulp serve:demo (from root folder) to see the demo app (http:localhost:4200)

If you merge the PR, here are a couple of things you must adjust:

• Rename the repository into ngx-alert-notifications
• edit the .git/config file in the project folder, to point to the new URL : https://github.com/cornflourblue/ngx-alert-notifications.git
• correct your email in .yo-rc.json, package.json files (this is not mandatory)
• create yourself an account on npmjs.com (to be abbe to publish your library there)
• create yourself an account on Travis (Travis CI support is needed to release)

To publish:

• gulp release version=major

That it!

I plan to submit more PRs to improve the library in the future.

If you have a question, drop me a line!

Cheers!