Help readthedocs find the vtkplotlib package.

Author: bwoodsend

.readthedocs.yaml

@@ -0,0 +1,8 @@
+version: 2
+
+python:
+  version: 3.7
+  install:
+    - requirements: docs/requirements.txt
+    - method: pip
+      path: .

docs/source/conf.py

@@ -12,9 +12,10 @@
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 #
-# import os
-# import sys
-# sys.path.insert(0, os.path.abspath('.'))
+import os
+import sys
+sys.path.insert(0, os.path.abspath('../../'))
+
 from sphinx.application import Sphinx
 
 # -- Project information -----------------------------------------------------