Readme: correct list of versions supported (#86)

Mention SBG upgrader

Author: mr-c

README.rst

@@ -3,12 +3,14 @@ Common workflow language standalone document upgrader
 =====================================================
 
 This is a standalone upgrader for Common Workflow Language documents from
-version "draft-3" to "v1.0".
+version ``draft-3``, ``v1.0``, and ``v1.1`` to ``v1.2``.
+
+See https://github.com/sbg/sevenbridges-cwl-draft2-upgrader for upgrading from ``sbg:draft-2``.
 
 It does not check for correctness of the input document, for that one can use
-the CWL reference implementation.
+`the CWL reference implementation <https://github.com/common-workflow-language/cwltool>`_ (``cwltool --validate``).
 
-This is written and tested for Python 3.5, 3.6, 3.7, and 3.8.
+This is written and tested for Python 3.6, 3.7, 3.8, 3.9, and 3.10.
 
 Install
 -------
@@ -22,12 +24,9 @@ Or from source::
   git clone https://github.com/common-workflow-language/cwl-upgrader.git
   pip install ./cwl-upgrader/
 
-  # or if you don't have pip installed
-  cd cwl-upgrader && python setup.py install
-
 Run on the command line
 -----------------------
 
 ::
 
-  cwl-upgrader path-to-cwl-document
+  cwl-upgrader path-to-cwl-document [another-path-to-cwl-document ...]

setup.py

@@ -45,6 +45,8 @@
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
         "Topic :: Scientific/Engineering",
         "Topic :: Scientific/Engineering :: Bio-Informatics",
     ],