Updates Requests to 2.4.3.
Remove diagnostic print.
Change umount methods.

Now preferentially (on OS X) uses diskutil.

In either case, it now uses the force or -f flag to ensure that
umounting occurs. I believe it is safe to assume that if you are mounting things
with python, when you tell python to unmount, you want it to happen.
make name optional with custom DP's
Update CHANGELOG to reference #6 solution. Update version.
Merge branch 'custom-dp-name-optional' of https://github.com/eahrold/python-jss into eahrold-custom-dp-name-optional
Add unique names to explicitly defined DPs with no name setting.
Merge branch 'eahrold-custom-dp-name-optional'
Update CHANGELOG.