Fix typo and update link to beta release post

Add pre-release theme gem link

Merge branch 'release/3.4.0'

Merge branch 'feature/staticman-commenting' into develop

Mention Staticman comments in README.md
- Close #424

Merge branch 'release/3.3.7' into develop

Merge branch 'release/3.3.7'

Update CHANGELOG.md, README.me, and bump version to 3.3.7

Merge branch 'release/3.3.4'

Merge branch 'feature/tr-locale' into develop

Add localized text supported by the theme

Update README to include version, link to CHANGELOG, and creator info.

Update README to include version, link to CHANGELOG, and creator info.

Merge branch 'release/3.2.8'

Add contributing info to README
- Close #357

Add Discourse link to README

Add Discourse link to README

Update README screenshots

Update README screenshots

Update README