Change `pokemon` command to display its types instead of using the `--types` flag

[digitalghost-dev]

As of v1.5.0, the -t | --types flag for the pokemon command displays the Pokémon's typing and nothing else. This information for the selected Pokémon seems important enough to be included with the base command (i.e., poke-cli pokemon vaporeon) instead of having to use a flag.

The -t | --types flag will be depreciated in v1.5.1 - (#171).