added nctutorial
Added the Markdown.md and README.md tutorials
squahed commits on hlao002
Merge pull request #584 from abarb014/cs100-2014fall

added Netcat Tutorial
Merge pull request #590 from aorti017/cs100-2014fall

Added the Markdown.md and README.md tutorials
Merge pull request #594 from hlao002/cs100-2014fall

squahed commits on hlao002
Rough draft for hw#4
First commit