adapters for all environments

config/database.yml.travis

@@ -1,5 +1,14 @@
-test:
+test: &test
   adapter: postgresql
   encoding: unicode
   database: travis_ci_test
   username: postgres
+
+development:
+  <<: *test
+
+production:
+  <<: *test
+
+cucumber:
+  <<: *test