Improve coverage of a few tests a little bit.
Merge pull request #536 from peternewman/coveralls

Improve coverage of a few tests a little bit.
Initial commit of the new libusb plugin code.
Add the README file
Add some badges to our Readme.
Fix some spacing
Really fix the spacing
Merge pull request #539 from peternewman/coveralls

Add some badges to our Readme.
Address Peter's comments.
Merge pull request #538 from nomis52/libusb-int

Initial commit of the new libusb plugin code.
Add a test for the LibUsbThread.
Minor cleanup
Merge pull request #540 from nomis52/libusb-int

Add a test for the LibUsbThread.
Add the threaded and async libusb senders.
Apply Peter's changes.
Fix a leak in the LibUsbThreadTest.
Merge pull request #541 from nomis52/libusb-int

Add the threaded and async libusb senders.