Update CLI with actual real options

[Dinnerbone]

Usage: rascal_cli [OPTIONS] [SCRIPT]...

Options:
  -h, --help
          Print help (see a summary with '-h')

  -V, --version
          Print version

Inputs:
  -c, --class <CLASS>
          A name of a class to be added to the compiled program.

          This should be the canonical name of a class (e.g. `Foo` or `foo.bar.Baz`) which should be found in the current directory (e.g. at `Foo.as` or `foo/bar/Baz.as`).

          All classes will be loaded after any scripts (see `SCRIPT`). If no scripts are specified, one (and only one) class is expected to have an entry point in the form of a `static function main()` method.

      --classpath <CLASSPATH>
          Adds a directory to be searched for classes.

          If no classpaths are specified, the current working directory will be used instead.

  [SCRIPT]...
          A loose script (not class file) to add to the compiled program.

          Multiple scripts may be added to one program. Scripts will be executed in order that they are added, before any classes are loaded.

          It is valid to not specify any scripts - if so, the entry point of the program will be the first class (see `--class`) that contains a `static function main()` method.

Generated SWF Options:
  -o, --output <OUTPUT>
          Output file path. This will be overwritten if it already exists.

          If not specified:
          - If there are any scripts (see `SCRIPT`) specified, the first one will be used to determine the output path.
          - `output.swf` will be used if all else fails.

  -v, --swf-version <SWF_VERSION>
          SWF version to use

          [default: 15]

      --frame-rate <FRAME_RATE>
          Frame rate of the output SWF

          [default: 24]