Merge pull request #27 from OSVR/openvr106

Update plugin code to work with OpenVR SDK 1.0.6

Merge pull request #23 from pstelzer/master

Fixed incorrect ID offset for Trigger Button

Merge pull request #15 from OSVR/update-for-steamvr-changes

Update for steamvr changes

Merge pull request #13 from her001/doc_in_readme

Add link to OSVR-Docs page for using the Vive