add tag 2019-06 to python readme (#7634)

specification/storage/resource-manager/readme.python.md

@@ -18,6 +18,7 @@ Generate all API versions currently shipped for this package
 
 ```yaml $(python) && $(multiapi)
 batch:
+  - tag: package-2019-06
   - tag: package-2019-04
   - tag: package-2018-11
   - tag: package-2018-07
@@ -30,6 +31,16 @@ batch:
   - tag: package-2015-06
 ```
 
+### Tag: package-2019-06 and python
+
+These settings apply only when `--tag=package-2019-06 --python` is specified on the command line.
+Please also specify `--python-sdks-folder=<path to the root directory of your azure-sdk-for-python clone>`.
+
+``` yaml $(tag) == 'package-2019-06' && $(python)
+python:
+  namespace: azure.mgmt.storage.v2019_06_01
+  output-folder: $(python-sdks-folder)/storage/azure-mgmt-storage/azure/mgmt/storage/v2019_06_01
+```
 ### Tag: package-2019-04 and python
 
 These settings apply only when `--tag=package-2019-04 --python` is specified on the command line.