Update README.md SSL version check syntax
Update the syntax for the SSL version check to be compatible with python 3.
@@ -177,7 +177,7 @@ brew install python
Once installed, you can query the version of OpenSSL like so:
```
-python -c "import ssl; print ssl.OPENSSL_VERSION"
+python -c "import ssl; print (ssl.OPENSSL_VERSION)"
```
You'll need a version with OpenSSL version 1.0.0 or later.
