Fixed title level consistency with history.

README.rst

@@ -1,6 +1,6 @@
-===============================
+======================
 Scrapy Inline Requests
-===============================
+======================
 
 .. image:: https://img.shields.io/pypi/v/scrapy-inline-requests.svg
         :target: https://pypi.python.org/pypi/scrapy-inline-requests
@@ -21,7 +21,7 @@ Requires ``Scrapy>=1.0`` and supports Python 2.7+ and 3.4+.
 * Documentation: https://scrapy-inline-requests.readthedocs.org.
 
 Usage
-=====
+-----
 
 The spider below shows a simple use case of scraping a page and following a few links:
 
@@ -47,7 +47,7 @@ See the ``examples/`` directory for a more complex spider.
 
 
 Known Issues
-============
+------------
 
 * Middlewares can drop or ignore non-200 status responses causing the callback
   to not continue its execution. This can be overcome by using the flag