add @stevschmid to the list of contributers 

Steven is an evolving and promising youngster, who has just started Ruby development two months ago. Since then, he contributed to numerous open source projects including the awesome Ruby ORM Gem called "Her".
To honor Stevens efforts, I am hereby adding him to the respectable list of contributors of this project.
Merge pull request #133 from calmyournerves/patch-1

Add @stevschmid to the list of contributers