first pass at 'wp super-admin' commmand
Merge branch 'master' into super-admins
Correct casing
Command description
Basic Behat tests for `wp super-admin`
Support adding / removing super admins based on user ID or user login
Don't do anything if this isn't multisite
Update formatting of behat tests
Less verbosity
Fix indentation
Merge pull request #819 from wp-cli/super-admins

Implement 'wp super-admin' commmand