Merge pull request #945 from spdx/goneall-patch-2

Document branches

README.md

@@ -15,7 +15,18 @@ All use cases supported by the prior version are supported here as well.
 This repository holds the model for the information captured in SPDX version 3
 standard.
 
-## Branches and Formats
+## Branch Structure
+
+The SPDX 3 model repo follows the [Gitflow](https://gist.github.com/HeratPatel/271b5d2304de2e2cd1823b9b62bf43e0) workflow with the addition of support branches.
+
+The branches in use are:
+
+- `main` - This will always be the latest released specification.
+- `develop` - This branch will be where the active development for the next major or minor version takes place.  Once released, the `develop` branch will be merged into the `main` branch.
+- `support/x.y` - These branches will be long lived and contain any updates to a minor version of the specification.  Additions such as translations can be added to the support branch.  `x.y` represents the major.minor version.  Once any changes are accepted and released, the support branch will be tagged and merged into both the develop and main branches.
+- General feature or fix branches - there may be feature branches made for specific enhancements or fixes to the spec.  These will be short lived and merged into either a support branch or the develop branch.
+
+## Formats
 
 The editable files inside `model/` directory are written in a
 [constrained subset of Markdown][format],