Changed the BSD-style license from BSD_license.txt to simply license.txt
Update README.md

Added info about where to find the licensing information
Fixes #234, adds the epub test suite to the deployment library
Merge branch 'develop' of https://github.com/readium/readium-js-viewer into dzb_update

Added new version of Lueckentext_v1_0 (management of focus)
Merge branch 'develop' of https://github.com/readium/readium-js-viewer into dzb_update

Added new version of Lueckentext_v1_0 (management of focus)
Merge branch 'dzb' of https://github.com/GermanCentralLibraryForTheBlind/readium-js-viewer into dzb_update
Merge branch 'dzb' of https://github.com/GermanCentralLibraryForTheBlind/readium-js-viewer into dzb_update