Switch template tags to use hyphens instead of underscores
Merge pull request #122 from infosiftr/hyphens

Switch template tags to use hyphens instead of underscores
Add "DOCKER-VERSIONS" section to each README.md
Merge pull request #124 from infosiftr/docker-versions

Add "DOCKER-VERSIONS" section to each README.md
Replace "Docker Version Support" with "Supported Docker versions" to be more consistent
Run update.sh