Update CONTRIBUTING.md
Update CONTRIBUTING.md

Update some formatting
whumph/sakai,udayg/sakai,introp-software/sakai,duke-compsci290-spring2016/sakai,introp-software/sakai,kingmook/sakai,ktakacs/sakai,ouit0408/sakai,whumph/sakai,lorenamgUMU/sakai,frasese/sakai,wfuedu/sakai,bzhouduke123/sakai,wfuedu/sakai,hackbuteer59/sakai,bzhouduke123/sakai,OpenCollabZA/sakai,zqian/sakai,wfuedu/sakai,buckett/sakai-gitflow,zqian/sakai,joserabal/sakai,duke-compsci290-spring2016/sakai,hackbuteer59/sakai,Fudan-University/sakai,willkara/sakai,rodriguezdevera/sakai,tl-its-umich-edu/sakai,clhedrick/sakai,clhedrick/sakai,kwedoff1/sakai,willkara/sakai,clhedrick/sakai,duke-compsci290-spring2016/sakai,ouit0408/sakai,conder/sakai,zqian/sakai,udayg/sakai,liubo404/sakai,whumph/sakai,surya-janani/sakai,OpenCollabZA/sakai,introp-software/sakai,tl-its-umich-edu/sakai,clhedrick/sakai,OpenCollabZA/sakai,wfuedu/sakai,whumph/sakai,zqian/sakai,ouit0408/sakai,surya-janani/sakai,buckett/sakai-gitflow,surya-janani/sakai,tl-its-umich-edu/sakai,liubo404/sakai,ktakacs/sakai,noondaysun/sakai,liubo404/sakai,bkirschn/sakai,ouit0408/sakai,liubo404/sakai,tl-its-umich-edu/sakai,hackbuteer59/sakai,Fudan-University/sakai,joserabal/sakai,liubo404/sakai,buckett/sakai-gitflow,bzhouduke123/sakai,noondaysun/sakai,duke-compsci290-spring2016/sakai,puramshetty/sakai,willkara/sakai,hackbuteer59/sakai,willkara/sakai,wfuedu/sakai,zqian/sakai,frasese/sakai,willkara/sakai,buckett/sakai-gitflow,colczr/sakai,duke-compsci290-spring2016/sakai,bzhouduke123/sakai,udayg/sakai,joserabal/sakai,bkirschn/sakai,conder/sakai,udayg/sakai,rodriguezdevera/sakai,ouit0408/sakai,rodriguezdevera/sakai,duke-compsci290-spring2016/sakai,puramshetty/sakai,kwedoff1/sakai,lorenamgUMU/sakai,tl-its-umich-edu/sakai,wfuedu/sakai,conder/sakai,kwedoff1/sakai,bkirschn/sakai,liubo404/sakai,clhedrick/sakai,hackbuteer59/sakai,wfuedu/sakai,hackbuteer59/sakai,bzhouduke123/sakai,kingmook/sakai,bzhouduke123/sakai,surya-janani/sakai,liubo404/sakai,kwedoff1/sakai,OpenCollabZA/sakai,OpenCollabZA/sakai,Fudan-University/sakai,kwedoff1/sakai,joserabal/sakai,pushyamig/sakai,kingmook/sakai,surya-janani/sakai,lorenamgUMU/sakai,joserabal/sakai,willkara/sakai,ktakacs/sakai,kingmook/sakai,ktakacs/sakai,zqian/sakai,buckett/sakai-gitflow,kwedoff1/sakai,puramshetty/sakai,hackbuteer59/sakai,whumph/sakai,joserabal/sakai,introp-software/sakai,ktakacs/sakai,frasese/sakai,lorenamgUMU/sakai,pushyamig/sakai,noondaysun/sakai,rodriguezdevera/sakai,conder/sakai,ktakacs/sakai,conder/sakai,surya-janani/sakai,rodriguezdevera/sakai,puramshetty/sakai,Fudan-University/sakai,buckett/sakai-gitflow,zqian/sakai,frasese/sakai,colczr/sakai,tl-its-umich-edu/sakai,surya-janani/sakai,lorenamgUMU/sakai,puramshetty/sakai,pushyamig/sakai,surya-janani/sakai,Fudan-University/sakai,joserabal/sakai,conder/sakai,frasese/sakai,whumph/sakai,bkirschn/sakai,clhedrick/sakai,noondaysun/sakai,bkirschn/sakai,duke-compsci290-spring2016/sakai,Fudan-University/sakai,colczr/sakai,introp-software/sakai,OpenCollabZA/sakai,frasese/sakai,wfuedu/sakai,colczr/sakai,tl-its-umich-edu/sakai,bzhouduke123/sakai,ouit0408/sakai,colczr/sakai,lorenamgUMU/sakai,pushyamig/sakai,rodriguezdevera/sakai,conder/sakai,bzhouduke123/sakai,pushyamig/sakai,rodriguezdevera/sakai,introp-software/sakai,udayg/sakai,ktakacs/sakai,noondaysun/sakai,lorenamgUMU/sakai,buckett/sakai-gitflow,colczr/sakai,hackbuteer59/sakai,ouit0408/sakai,pushyamig/sakai,colczr/sakai,udayg/sakai,willkara/sakai,lorenamgUMU/sakai,conder/sakai,OpenCollabZA/sakai,noondaysun/sakai,duke-compsci290-spring2016/sakai,whumph/sakai,frasese/sakai,bkirschn/sakai,ktakacs/sakai,clhedrick/sakai,introp-software/sakai,kwedoff1/sakai,joserabal/sakai,pushyamig/sakai,OpenCollabZA/sakai,bkirschn/sakai,pushyamig/sakai,liubo404/sakai,kingmook/sakai,noondaysun/sakai,ouit0408/sakai,willkara/sakai,Fudan-University/sakai,kingmook/sakai,whumph/sakai,noondaysun/sakai,kingmook/sakai,colczr/sakai,Fudan-University/sakai,bkirschn/sakai,zqian/sakai,rodriguezdevera/sakai,introp-software/sakai,udayg/sakai,puramshetty/sakai,kingmook/sakai,frasese/sakai,puramshetty/sakai,tl-its-umich-edu/sakai,clhedrick/sakai,udayg/sakai,buckett/sakai-gitflow,kwedoff1/sakai,puramshetty/sakai