Print version information

## Usage

`circleci version [flags]`

## Flags

| Flag     | Description                                        |
| -------- | -------------------------------------------------- |
| `--json` | output as JSON (fields: version, commit, modified) |

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

## Examples

- Print version and commit hash: 
  `circleci version`
- Print as JSON: 
  `circleci version --json`
- Extract just the commit hash: 
  `circleci version --json | jq -r .commit`

## Details

Print the version and commit hash this binary was built from.

JSON fields: version (release tag, or "dev" for unreleased builds), commit
(full git hash), modified (true when built from a dirty working tree)

