Update README.rst

README.rst

@@ -1,12 +1,20 @@
 requests-http-signature: A Requests auth module for HTTP Signature
 ==================================================================
-
 **requests-http-signature** is a `Requests <https://github.com/requests/requests>`_ `authentication plugin
 <http://docs.python-requests.org/en/master/user/authentication/>`_ (``requests.auth.AuthBase`` subclass) implementing
 the `IETF HTTP Signatures draft RFC <https://tools.ietf.org/html/draft-cavage-http-signatures>`_. It has no required
 dependencies outside the standard library. If you wish to use algorithms other than HMAC (namely, RSA and ECDSA algorithms
 specified in the RFC), there is an optional dependency on `cryptography <https://pypi.python.org/pypi/cryptography>`_.
 
+Installation
+------------
+::
+
+    pip install requests-http-signature
+
+Usage
+-----
+
 .. code-block:: python
 
   import requests
@@ -31,12 +39,6 @@ incoming requests:
 
   HTTPSignatureAuth.verify(request, key_resolver=key_resolver)
 
-Installation
-------------
-::
-
-    pip install requests-http-signature
-
 Asymmetric key algorithms (RSA and ECDSA)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 For asymmetric key algorithms, you should supply the private key as the ``key`` parameter to the ``HTTPSignatureAuth()``