Exclude any direnv artifacts from project

- ignore from VCS
- ignore in sphinx renderer

.gitignore

@@ -1,4 +1,6 @@
-_build/
-*.swp
 *.swo
+*.swp
 .DS*
+.direnv/
+.envrc
+_build/

conf.py

@@ -64,7 +64,7 @@ release = '0.1'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ['_build']
+exclude_patterns = ['_build', '.direnv', 'README.md']
 
 # The reST default role (used for this markup: `text`) to use for all documents.
 #default_role = None