Added functionality to clone a git repo into a local directory.

Introduced clj-jgit.
Changing ns to reflect design decision.
Broken on windows, testing on Chris' not windows.
Get repo by user name and repo name.
Codeq now checks if a repo already exists, will not run if the same repo is found.

Changed the input of git/import-repo to reflect new repo naming conventions.
Missed a couple file separators.
Removed clygments.

Changed absolute path to path.
Merge pull request #23 from jcsims/Implement_git_import_#6

Implement git import #6