LICENSE[.txt -> .md] & Changed contents.
changed license in *.gradle files.
updated license in tests.
updated license in sleepfighter.utils.*, + javadoc fixes.
updated license in sleepfighter.[preference, receiver, service, speech, text]
updated license in sleepfighter.persist.*
updated license in sleepfighter.model.*
updated license in sleepfighter.gps.*
updated license in sleepfighter.challenge.*
updated license in sleepfighter.audio.*
updated license in sleepfighter.[activity, adapter, android, app].*
updated license in instrumentTest.
updated license in android res.
updated license in sleepfighter.factory.*