Host landing page in github pages

[ohtake]

As landing pages are static, GH Pages can host them.

• Pros
  • Reduces traffic and loads on AWS
• Cons
  • Causes downtime while applying changes
  • Cannot host code coverage report, esdoc and storybook-static

Tasks:

• Test if custom domain of GitHub Pages works as expected
  • Set custom domain test.cattaz.io to GitHub Pages
  • (@kodakat) Make test.cattaz.io be a CNAME record to FujitsuLaboratories.github.io.
  • (@kodakat) Remove test.cattaz.io record
• (@kodakat) Make demo.cattaz.io be a CNAME record to the AWS ELB
  • This change does not have side effects
• Set custom domain cattaz.io to GitHub Pages
  • This change may cause an warning every time you push to gh-pages branch
• (@kodakat) Set @.cattaz.io to be a CNAME record to FujitsuLaboratories.github.io.
  • This change may cause outages of demo site for a while
• If you want to release, push to gh-pages instead of release branch

[codecov-io]

Codecov Report

Merging #15 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #15   +/-   ##
=======================================
  Coverage   74.69%   74.69%           
=======================================
  Files          20       20           
  Lines         996      996           
  Branches      115      115           
=======================================
  Hits          744      744           
  Misses        216      216           
  Partials       36       36

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[coveralls]

Coverage remained the same at 76.564% when pulling 48b42dc on landingpage-gh into 165c072 on master.