Update ignore patterns for future passwords file
Move passwords to dedicated non-VCSed file

Created a file that will stay local, with the passwords used in the app
(ACRA crash reports and test mode password). This file is not checked
into git, but a template for it is available in the repository.
Add description to template passwords file, and fix error
Update CONTRIBUTING.md with a note on passwords
Update travis config for passes
Merge pull request #132 from daydreaming-experiment/feature/issue-93-passwords

Feature/issue 93 passwords