refs #26,#91 Add new APK for Teacher, version 0.9.6.  Wow, version bump!
refs #91 add 0.9.6 teacher app to the splash page.  Clean out the old
versions.
refs #93, #26 Bump node package.json to 10.0.0, add more functional
version of teacher APK v 0.9.6.
refs #26,#94 Add correct version numbers in README to match release.
Merge commit 'd0b0935' into dev