Add link to Kubernetes executor details

See merge request !670

Specify an explicit length for git rev-parse --short to avoid conflicts when run

See merge request !672

Specify an explicit length for git rev-parse --short to avoid conflicts when run in different environments.

Document how to define default image to run using Kubernetes executor

See merge request !668

Add handling of non-existing images for Docker >= 17.07

See merge request !664

Update README.md

See merge request !659

RunSingleCommand race condition in waitForInterrupts

See merge request !594

Update cli dep

See merge request !656

Lock runners to project by default

Closes #2615

See merge request !657

Given it improves security, this should be the default.

Fixes: gitlab-org/gitlab-ci-multi-runner#2615

Start using 'toc' in yaml frontmatter to explicitly disable it

See merge request !644

Include note about volume path on OSX.

See merge request !648

Add support for tmpfs on the job container.

See merge request !654

fix: read error from upload artifacts execution.

Closes #2584

See merge request !645

Oxford comma, and improve wording

See merge request !653

Adding tzdata by default to avoid OffPeakPeriods timezone error

See merge request !649

fix I am not sure section link

See merge request !650