Update documentation, release on npm

[fractaltheory]

Status: Ready for Review Owner: @fractaltheory Reviewers: @jansepar

Changes

• Some quick edits to existing document which we can adapt for other plugins
• Add PULL-REQUEST-TEMPLATE.md file (based on astro)
• Add RELEASE.md document describing release process
• Remove release Grunt task
• Released on npm

  Jira Tickets:

• WEB-479

  Todos:

• [ ] +1

  Feedback:

none so far

[jansepar]

:+1:

[fractaltheory]

Added a pull request template based on astro

[jansepar]

:shipit: