Merge pull request python#2 from mnm678/yubikey

Add Yubikey example and link

pep-0458.txt

@@ -963,7 +963,7 @@ in this section:
    delegate trust of these wheels to an online role.
 
 2. An easy-to-use key management solution is needed for developers.
-   `miniLock`__ is one likely candidate for management and generation of keys.
+   `YubiKey`__ is one likely candidate for management and generation of keys.
    Although developer signatures can remain optional, this approach may be
    inadequate due to the great number of potentially unsigned dependencies each
    distribution may have.  If any one of these dependencies is unsigned, it
@@ -973,7 +973,7 @@ in this section:
    distributions and manage keys is expected to render key signing an unused
    feature.
 
-    __ https://github.com/kaepora/miniLock
+    __ https://www.yubico.com/products/yubikey-hardware/
 
 3. A two-phase approach, where the minimum security model is implemented first
    followed by the maximum security model, can simplify matters and give PyPI