README with introduction text for Interacting with the User
Exercises and description for Command Line Arguments
Hard wrap lines at 80 chars
Draft exercises for STDIN and STDOUT

Currently just code for exercises. No intro text, descriptions, or help.
Add exercise on using minimist to parse argv

Using minimist node package, students will write a script that accepts
many options when run from the command line.
Add introductory description for STDIN and STDOUT
Add instruction text and hints to STDIN and STDOUT exercises
Add link to STDIN and STDOUT from Interacting w/ User readme
Add note that ^C == CTRL-C
Merge pull request #4 from codeunion/interacting-with-the-user

First set of exercises for Interacting with the user