remove unused imports, fix docstring
fix determining reponame for git repo
add unit tests for using GitRepository and SvnRepository
add import test for pysvn, print message if tests are being skipped
don't raise pysvn.ClientError, just try referencing it
fix SvnRepository test
Merge pull request #1 from boegel/repository

add additional unit tests, fix bugs in GitRepository and SvnRepository, code cleanup