Update user.md

more examples

Author: pmeisen

documentation/user.md

@@ -2,18 +2,39 @@
 
 Breinify supports various user properties that you can include in the analytics.
 
-### Example of full user info
+### Example of different user info
 
 ```javascript
-var user = {
-    'email' : 'johndoe@gmail.com',
+var user1 = {
+    'email' : 'johndoe@gmail.com'
+};
+
+var user2 = {
     'firstName' : 'John',
     'lastName' : 'Doe',
-    'dateOfBirth' : new Date(1985,6,30),
-    'deviceId' : 'AAAAAAAAA-BBBB-CCCC-1111-222222220000',
-    'md5Email' : '761cd16b141770ecb0bbb8a4e5962d16',
-    'sessionId' : 'SID:ANON:w3.org:j6oAOxCWZ'
-}
+    'dateOfBirth' : new Date(88387200 * 1000);
+};
+
+var user3 = {
+    'md5Email' : '761cd16b141770ecb0bbb8a4e5962d16'
+};
+
+var user4 = {
+    'deviceId' : 'AAAAAAAAA-BBBB-CCCC-1111-222222220000'
+};
+
+/*
+ * A user can contain additional information, which may be relevant for the end-point called,
+ * e.g., the result of temporalData may enhance if a longitute and latitude is passed.
+ */
+var user4 = {
+    'additional': {
+      'location': {
+        'latitude': 37.323,
+        'longitude': -122.0322
+      }
+    }
+};
 ```
 
 ### Fields
@@ -74,3 +95,28 @@ Attribute key: `sessionId`
 Example value: `SID:ANON:w3.org:j6oAOxCWZ`
 
 Description: The user's [Session Id](https://en.wikipedia.org/wiki/Session_ID).
+
+#### additional Information
+
+Attribute key: `additional`
+
+Example values:
+
+```
+var additional1 = {
+    'location': {
+        'latitude': 37.323,
+        'longitude': -122.0322
+    }
+};
+
+var additional2 = {
+    'location': {
+        'city': 'Cupertino',
+        'state': 'California',
+        'country': 'US'
+    }
+};
+```
+
+Description: The user's [Session Id](https://en.wikipedia.org/wiki/Session_ID).