Doc: Add command arguments to the documentation

[jiminhsieh]

Maybe we could add a documentation about command arguments at this page - Usage.

giter8/app/src/main/scala/giter8.scala

Lines 66 to 84 in df63ff6

	opt[String]('b', "branch") action { (b, config) =>
	config.copy(ref = Some(Branch(b)))
	} text "Resolve a template within a given branch"
	opt[String]('t', "tag") action { (t, config) =>
	config.copy(ref = Some(Tag(t)))
	} text "Resolve a template within a given tag"
	opt[String]('d', "directory") action { (d, config) =>
	config.copy(directory = Some(d))
	} text "Resolve a template within a given directory"
	opt[String]('o', "out") action { (o, config) =>
	config.copy(out = Some(o))
	} text "Output directory"
	opt[Unit]('f', "force") action { (_, config) =>
	config.copy(forceOverwrite = true)
	} text "Force overwrite of any existing files in output directory"

[ches]

Agree, especially since the sbt new documentation says this:

Giter8 parameters

You can append Giter8 parameters to the end of the command, so for example to specify a particular branch you can use:

$ sbt new scala/scala-seed.g8 --branch myBranch

And yet, you can't find mention of such parameters anywhere in Giter8 docs.