Let autodoc only document classes and methods relevent for the user

- see #186
diff --git a/docs/conf.py b/docs/conf.py
index 660f6a6..737d0c8 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -107,6 +107,10 @@
 #
 # show_authors = False
 
+autoclass_content = 'both'
+
+autodoc_member_order = 'bysource'
+
 # The name of the Pygments (syntax highlighting) style to use.
 pygments_style = 'sphinx'