added recursive flag to glone task, tests and documentation
added cwd option to spawn call
updated README to include documentation for verbose and cwd options
added verification that cwd exists
Merge pull request #58 from dylancwood/add_cwd_option

Add cwd option
Merge pull request #57 from dylancwood/add_clone_recursive

added recursive flag to clone task, tests and documentation
Merge remote-tracking branch 'origin/master' into v0.2.x