Search parent dirs to home, or root

[cfurrow]

WIP

tod now searches current directory for a '.todfile' and continues checking in parent folders until it either finds a '.todfile' or it ends up in HOME (~) or root (/).

This way you can share a .todfile for all projects, if you wanted, in your home dir.

TODO

• add ability to create a local .todfile in current dir (for sub projects/dirs)
• add output of where .todfile was created if one did not exist

[cfurrow]

Well, you're quick :) I have another PR soon that will add the tod local (or something) to force-creation of a .todfile in your current dir. That way it won't search up the dir tree.

[skycocker]

Feel free to send a pull request with your name in gem's authors section if you want. Thanks!
And yes, we need the ability of picking the target todfile directory.