Fixes 2720

You can review at http://metalivedoc.readthedocs.org/en/2720-running/reference/run.html

Before you get bogged-down in misspellings and typos, please read through the whole thing and give me feedback on these broad issues:

1. **Organization**. Does it make sense to group the OPTIONS as I have? I've tried to organize them in the order you need to make decisions. If you don't like it, please suggest a rationale for another order/grouping.
2. **"Operator" and "Developer"**. I've introduced some new terms to describe who's doing what and their roles. Docker is for DevOps, but sometimes you find yourself in one role (making a container, as the developer) and sometimes in another (running a container, as the operator). Do we like these terms and should we use them everywhere in the docs? I really want to get away from using passive voice. We should always know who/what is doing the work.

The metrics document was more or less stolen directly from the [blog](http://blog.docker.io/2013/10/gathering-lxc-docker-containers-metrics/) with some editing to make it more formal and (in places) more concise.