Add clarifying notes to deployment docs
Add clarifying notes to deployment docs

- Specify when rake release is not required
- Specify the impact pushing a new image has
- Specify when updating Homebrew is not required

Tiger66639/codeclimate,pedromarquesalmeida/A,codeclimate/codeclimate,oeeckhoutte/codeclimate,Danisan/codeclimate,ivantsepp/codeclimate,mrb/codeclimate,whip112/codeclimate,Tiger66639/codeclimate,bobbytables/codeclimate,pedromarquesalmeida/A,mrb/codeclimate,mrb/codeclimate,syzer/codeclimate,oeeckhoutte/codeclimate,codeclimate/codeclimate,sanultari/codeclimate,sanultari/codeclimate,whip112/codeclimate,Danisan/codeclimate,eliotsykes/codeclimate,codeclimate/codeclimate,syzer/codeclimate,bobbytables/codeclimate,ivantsepp/codeclimate,eliotsykes/codeclimate