Merge pull request #112 from azmeuk/doc

Some documentation love

docs/api.rst

@@ -1,5 +1,5 @@
-:mod:`BTrees` API Reference
-===========================
+API Reference
+=============
 
 
 Protocol APIs
@@ -106,3 +106,7 @@ Utilities
      :members:
 
      .. automethod:: __call__
+
+
+.. automodule:: BTrees.check
+    :members:

docs/conf.py

@@ -98,7 +98,7 @@
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'default'
+html_theme = 'sphinx_rtd_theme'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
@@ -250,4 +250,8 @@
 
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'http://docs.python.org/': None}
+intersphinx_mapping = {
+    "python": ('https://docs.python.org/3/', None),
+    "persistent": ('https://persistent.readthedocs.io/en/latest/', None),
+    "ZODB": ("http://www.zodb.org/en/latest/", None),
+}