Find a way to deploy

[barrybecker4]

Find a free way to deploy the android app so others can get it on their androind devices.

Initially at least we need to limit usage to just people we know. Offhand, there are 2 ways that I can think of to do this:

1. Prompt for a passphrase when the app opens. Only those that know the passpharse can play
2. Have a white list of email addresses for people that are allowed to play. Only those that we add to the while list can play. If someone tries to play that is not on the white list, popoen an alert that says that they should send email to you to add them.

Probably 2 is a little easier to implement and more convenient for users.