Replace the only EGD call by urandom

Also harmonize documentation.  #boyScout
diff --git a/src/OpenSSL/version.py b/src/OpenSSL/version.py
index f284b04..02c5fc3 100644
--- a/src/OpenSSL/version.py
+++ b/src/OpenSSL/version.py
@@ -11,7 +11,7 @@
     "__title__", "__uri__", "__version__",
 ]
 
-__version__ = "0.16.dev0"
+__version__ = "15.2.0.dev0"
 
 __title__ = "pyOpenSSL"
 __uri__ = "https://github.com/pyca/pyopenssl"