Better examples for the login command.
Updated to have line returns between examples & have comments line up.

Ex output:

Usage: force login

Log in to force.com

Examples:

  force login 			# for Production and DE orgs

  force login test 	# for Sandbox orgs

  force login pre 	# for Pre-release feature orgs
Merge pull request #34 from noeticpenguin/master

Better examples for the login command.