Update installation-makahiki-vagrant-environment-setup.rst to clarify that git commands should work from the standard Command Prompt without having to open Git for Windows.
Update installation-makahiki-vagrant-environment-setup.rst: Fixed missing single quotes in last edit.
Update installation-makahiki-vagrant-environment-setup.rst: Clarified git clone instructions.
Update installation-makahiki-vagrant-environment-setup.rst: Clarified git clone instructions.
Update installation-makahiki-vagrant-environment-setup.rst: Clarified git clone instructions.
Merge pull request #569 from jtakayama/master

Cleaned up Vagrant documentation: installation-makahiki-vagrant-environment-setup.rst