v2.0: CLI options - Githubissues

Summary

What: The CLI should accept options

Why: Options are useful when using a CLI, especially a --help option when using the CLI.

[x] --help: Shows a help menu on how to use the CLI
[x] ~--filter-type: Tells --filter what to execute. Defaults to case.~
- [x] ~Accepts "suite"~
- [x] ~Accepts "case"~
- ~Example: rhum --filter-type suite --filter myTestSuite~
[x] ~--filter: Executes a single test suite or test case based on --filter-type~
- ~Example: rhum --filter myTestCase~
[x] --filter-test-case="someTestCase" {dir/file}
[x] --filter-test-suite="someTestSuite" {dir/file}