Show scene hints - how to finish the particular scene

v0.4-alpha

REQ: Installation instructions in README.md

Player names filled in automatically for Android 6.0 and higher

BUG: beginning Android 6.0 (API level 23), the way to ask for permiss…

…ions have changed -> ask explicitly for READ_CONTACTS permission

v0.2-alpha

User can type a password to unlock scenes

v0.1-alpha

To test release capability