Adds support for writing CSRs.
diff --git a/docs/x509.rst b/docs/x509.rst
index 850e3df..8e762ef 100644
--- a/docs/x509.rst
+++ b/docs/x509.rst
@@ -366,6 +366,17 @@
>>> isinstance(csr.signature_hash_algorithm, hashes.SHA1)
True
+ .. method:: public_bytes(encoding)
+
+ :param encoding: The
+ :class:`~cryptography.hazmat.primitives.serialization.Encoding`
+ that will be used to serialize the certificate request.
+
+ :return bytes: The data that can be written to a file or sent
+ over the network to be signed by the certificate
+ authority.
+
+
.. class:: Name
.. versionadded:: 0.8