Add spec for --initialize-git-repository
Initialize git repository at last
Allow 'initialize-git-repository' in config file
Respect value of `initialize-git-repository` in config file
Fix tests
Update readme
Minor refactor
Provide git option before build
Fix readme
Merge pull request #14 from fujimura/git-init

Run `git init`, `git add .` and `git commit -m"Init"` after generation