Migrate README docs to sphinxdoc

Signed-off-by: martin f. krafft <madduck@madduck.net>
diff --git a/doc/.gitignore b/doc/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/doc/.gitignore
@@ -0,0 +1 @@
+/build