doc: updated in regards to versioning

Author: nemonik

README.MD

@@ -22,7 +22,11 @@ replacement for the [python-stix][python stix] API.
 Releases of java-stix will comply with the Semantic Versioning specification at 
 [http://semver.org/][semver]. Java-stix is currently under active development; 
 see TODO.txt for a tentative roadmap.  Releases will be announced on the [STIX 
-discussion list][list].
+discussion list][list]. A java-stix for a particular shema release will match the 
+STIX schema version in Semantic Versioning form. Follow up patched releases of 
+java-stix for a particular schema release will add and increment a 4th digit. For
+example, the first patch release for java-stix `v1.2.0` would be `v1.2.0.1`. Patches 
+will be worked in a branch prior to being tagged and released.
 
 ## <a name="releases"></a>Releases