NIST KASVS values for DH and ECDH

http://csrc.nist.gov/groups/STM/cavp/documents/keymgmt/kastestvectors.zip

Only the "Static" scheme is added here since we are only testing the
primitive DH and ECDH key agreement operation.
diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index 5f31e30..2682d37 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -22,6 +22,7 @@
 * RSA FIPS 186-2 and PKCS1 v1.5 vulnerability test vectors from `NIST CAVP`_.
 * FIPS 186-2 and FIPS 186-3 DSA test vectors from `NIST CAVP`_.
 * FIPS 186-2 and FIPS 186-3 ECDSA test vectors from `NIST CAVP`_.
+* DH and ECDH test vectors from `NIST CAVP`_.
 * Ed25519 test vectors from the `Ed25519 website_`.
 * OpenSSL PEM RSA serialization vectors from the `OpenSSL example key`_ and
   `GnuTLS key parsing tests`_.