fixes #1054 -- update list of supported openssl versions (#1055)

Author: alex

INSTALL.rst

@@ -25,9 +25,9 @@ Supported OpenSSL Versions
 pyOpenSSL supports the same platforms and releases as the upstream cryptography project `does <https://cryptography.io/en/latest/installation/#supported-platforms>`_.
 Currently that means:
 
-- 1.0.2
 - 1.1.0
 - 1.1.1
+- 3.0
 
 You can always find out the versions of pyOpenSSL, cryptography, and the linked OpenSSL by running ``python -m OpenSSL.debug``.