mazer install cli help and usage blurbs need update (no -r file, s/repo/collection, etc)

[alikins]

Bug Report

The help and usage blurbs for mazer install are no longer accurate.

mazer install [options] [-r FILE | repo_name(s)[,version] | scm+repo_url[,version] | tar_file(s)]

• -r FILE is no longer a thing and should be removed
• repo_name should be collection_name
• scm+repo_url should be removed for now
• tar_file(s)

MAZER VERSION

name = mazer
version = 0.5.0
config_file = /home/adrian/.ansible/mazer.yml
uname = Linux, newswoop, 5.0.5-200.fc29.x86_64, #1 SMP Wed Mar 27 20:58:04 UTC 2019, x86_64
executable_location = /home/adrian/venvs/mazer_0.4.0_py36/bin/mazer
python_version = 3.6.8 (default, Jan 27 2019, 09:00:23) [GCC 8.2.1 20181215 (Red Hat 8.2.1-6)]
python_executable = /home/adrian/venvs/mazer_0.4.0_py36/bin/python