Git-jock

Added
- Configuration file
- `~/.jockrc` stores repositories and groups for commands to be run on (YAML formatted)
- `--group` can be used to refer to groups of repositories (same usage as repositories)

Changed
- `--respository` now refers to repository stored in `.jockrc`, previously looked at adjacent directories

Added
- Initial usage: `jock [OPTIONS] COMMAND [ARGS]`
- OPTIONS can be `--version`, `--help` or a list of repositories such as `-r git-jock-cli` or `--repository
some-service`
- COMMAND is any of the currently supported git commands: `add`, `branch`, `checkout`, `clone`, `commit`, `fetch`,
`pull`, `push`, `reset`, `restore`, `rm`, `switch`, or `tag`
- ARGS are git arguments passed directly to the git command