Update Python requirements in the documentation (3.6+).

jonathanslenders · jonathanslenders · commit 73f98ee9306a · 2020-03-18T22:19:44.000+01:00
diff --git a/docs/index.rst b/docs/index.rst
@@ -36,7 +36,8 @@ Like readline:
 
 Works everywhere:
 
-- Pure Python. Runs on all Python versions from 2.6 up to 3.4.
+- Pure Python. Runs on all Python versions starting at Python 3.6.
+  (Python 2.6 - 3.x is supported in prompt_toolkit 2.0; not 3.0).
 - Runs on Linux, OS X, OpenBSD and Windows systems.
 - Lightweight, the only dependencies are Pygments, six and wcwidth.
 - No assumptions about I/O are made. Every prompt_toolkit application should
