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
add note about using cwd with files
fixed typo in cwd example
added additional options to merge task with tests
add documentation for new merge options
Merge pull request #62 from dylancwood/git_merge_options

More Git merge options
fixed typo
emphasize cwd option
Merge pull request #60 from dylancwood/update_cwd_docs

add note about using cwd with files
allow deletion of tags
Merge pull request #69 from pghalliday/deletetag

allow deletion of tags
added underscore
added argument management library
added underscore.string to dependencies
converted four grunt-git libs to use argUtil