Provide guidance for deploying migrations

This would primarily be:

• Best practices (For example, don't run migrations on app startup, generate scripts, etc.)
• How to generate scripts
  • Possibly also how to use ef.exe
• How to deploy scripts to common places--e.g. Azure
  • Possibly pros and cons of doing this a maintenance window as opposed to against a running app, and strategies for doing it against a running app if this is needed.