changed version control definition
Merge pull request #17 from jameslinjl/master

changed version control definition
changed cloning definition and link
Merge pull request #18 from jzf2101/master

changed cloning definition and link
Merge branch 'master' of github.com:oh-columbia-5/oh-columbia-5.github.io
updating css
Merge branch 'master' of github.com:eunicekokor/oh-columbia-5.github.io