allow connection string to not include a password
removed devious password changing from travis conf
.idea to .gitignore

Soft-tabs to hard-tabs

Composer back to soft-tabs
Merge pull request #312 from fetch/connection-url-parsing

@koenpunt: allow connection string to not include a password
Merge branch 'master' of https://github.com/kla/php-activerecord
Merge branch 'master' into production