Fixes #8

To support version four required a change to the activesupport
dependency as well. I updated it to include the version that is
supported by jekyll 3 up to the latest version.

Bump jekyll depedency to include version four

Bumps [activesupport](https://github.com/rails/rails) from 6.0.1 to 6.0.3.1.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v6.0.3.1/activesupport/CHANGELOG.md)
- [Commits](rails/rails@v6.0.1...v6.0.3.1)

Signed-off-by: dependabot[bot] <[email protected]>

…6.0.3.1

Bump activesupport from 6.0.1 to 6.0.3.1

Bumps [kramdown](https://github.com/gettalong/kramdown) from 2.1.0 to 2.3.0.
- [Release notes](https://github.com/gettalong/kramdown/releases)
- [Changelog](https://github.com/gettalong/kramdown/blob/master/doc/news.page)
- [Commits](https://github.com/gettalong/kramdown/commits)

Signed-off-by: dependabot[bot] <[email protected]>

Bump kramdown from 2.1.0 to 2.3.0

The original code used 'open' which was apparently calling Kernel#open
versus URI#open which I assume the author originally expected to use
since open-uri was being required at the top of the file. This fix
forces the use of the open method in the URI library.

Fix use of open for GitHub URI

Bumps [kramdown](https://github.com/gettalong/kramdown) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/gettalong/kramdown/releases)
- [Changelog](https://github.com/gettalong/kramdown/blob/master/doc/news.page)
- [Commits](https://github.com/gettalong/kramdown/commits)

Signed-off-by: dependabot[bot] <[email protected]>

Bump kramdown from 2.3.0 to 2.3.1

Bumps [rexml](https://github.com/ruby/rexml) from 3.2.4 to 3.2.5.
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.2.4...v3.2.5)

Signed-off-by: dependabot[bot] <[email protected]>

Bump rexml from 3.2.4 to 3.2.5

Bumps [addressable](https://github.com/sporkmonger/addressable) from 2.7.0 to 2.8.0.
- [Release notes](https://github.com/sporkmonger/addressable/releases)
- [Changelog](https://github.com/sporkmonger/addressable/blob/main/CHANGELOG.md)
- [Commits](sporkmonger/addressable@addressable-2.7.0...addressable-2.8.0)

---
updated-dependencies:
- dependency-name: addressable
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

Bump addressable from 2.7.0 to 2.8.0

Update README.md