first pass at a more versatile mv
remove failing and currently not-supported test case
add inline apology
Merge pull request #12 from stefanpenner/mv

Mv
bump version
Update README.md
add map
add travis file
Merge pull request #14 from stefanpenner/map

add map
Update README.md
bump version
Update index.js
bump version
Adds log method
Use walk-sync, tree, and ls
Fix tests