Clean up the Continuous Integration instructions

[webkenny]

There are some grammatical and spelling misses in the ci.md file.

Also, there's some confusion where it relates to the "Technical Architect" instructions and setting up automatic deployments with Travis because you need an administrative level of permissions to achieve that. So, while it's something most people have when dealing with their own repositories, it's not something we at Acquia do as architects so I am noting it to save someone the time I spent handwringing over it.

PR incoming.