Documents building - initial

Change-Id: I3b1287b106e0a2d6f8d8201190d0130ca94444a3
Signed-off-by: Juha Hyttinen <juha.hyttinen@nokia.com>
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bdb4219
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.tox
+docs/_build/