diff --git a/app/constants/environment-constants.js b/app/constants/environment-constants.js
new file mode 100644
index 0000000..e93182a
--- /dev/null
+++ b/app/constants/environment-constants.js
@@ -0,0 +1,30 @@
+/**
+ * A module with constants for the REST API
+ *
+ * @module app/constants
+ * @exports app/constants
+ *
+ * @version 0.0.1
+ */
+
+window.angular && (function (angular) {
+    'use strict';
+
+    angular
+        .module('app.constants')
+        .constant('EnvironmentConstants', {
+            'inDevelopmentMode': true,
+            'RestConstants': {
+            },
+            FLASH_MESSAGE : {
+              duration: 2000,
+              classes: {
+                warning: 'message-warning',
+                info: 'message-info',
+                error: 'message-error',
+                success: 'message-success'
+              }
+            }
+        });
+
+})(window.angular);
diff --git a/app/constants/index.js b/app/constants/index.js
new file mode 100644
index 0000000..c27d81d
--- /dev/null
+++ b/app/constants/index.js
@@ -0,0 +1,17 @@
+/**
+ * A module with constants for the application
+ *
+ * @module app/constants/index
+ * @exports app/constants/index
+ * @version 0.0.1
+ */
+
+window.angular && (function (angular) {
+    'use strict';
+
+    angular
+        .module('app.constants', [])
+        .constant('AppConstants', {
+        });
+
+})(window.angular);