Trigger, watch and cancel CI runs

## Usage

`circleci run <command> [flags]`

## General Commands

| Command | Description                    |
| ------- | ------------------------------ |
| `list`  | List recent runs for a project |

## Targeted Commands

| Command   | Description                                         |
| --------- | --------------------------------------------------- |
| `cancel`  | Cancel a run                                        |
| `get`     | Get a run's status                                  |
| `open`    | Open the current project's runs page in the browser |
| `trigger` | Trigger a new run                                   |
| `watch`   | Watch a run until it completes                      |

## Flags

Global flags: `-c, --config`, `--debug`, `--no-color`, `-q, --quiet` — see `circleci --help`.

## Details

Work with CircleCI runs.

A run is created each time a trigger fires for a pipeline. It carries
the VCS context for that firing and groups the workflows it produced;
each workflow in turn contains jobs.

