Updated Tag Group Documentation

Author: Ravi Prakash

tags/tag-groups-draft-01.md

@@ -1,6 +1,11 @@
 # Tag Groups
 
-| Name `(groups/[index]/descriptor.name)` | Code `groups/[index]/descriptor.code` | Description                                                                                            |
+Tag groups are labels under which various tags can be grouped. In the mobility sector, Tag Groups can contains various service-specific information. Tag Groups can be standardized at a domain-level or a network-level depending upon implementer demand for standardizations. Some examples of Tag Groups are shown below. 
+
+Note: The below list is NOT a recommended or required standard. This list will be standardized on the basis of adoption by implementers. 
+
+## Examples:
+| Example Name `(groups/[index]/descriptor.name)` | Example Code `groups/[index]/descriptor.code` | Description                                                                                            |
 |-----------------------------------------|---------------------------------------|--------------------------------------------------------------------------------------------------------|
 | Localization                            | locale                                | adapting a software product to the linguistic, cultural and technical requirements of a target market. |
 | Fare Policy                             | fare_policy                           | Fare calculation rules for a mobility service                                                          |