[REFACTORING]Remove apparent namespace
[REFACTORING]Remove some variables and implement equivalent methods
Remove unneccessary arguments
Add RSpect as a dependent gem
Add a spec for base directory
Ensure base directory to exist when gitpushing
Add specs that base_dir is absolute path
Ensure base_dir config absolute path

If it's relative, changing directory more than once raises missing
repository path.
Merge pull request #4 from KitaitiMakoto/care-base-dir

Care base_dir