Add the documentation for release-0.8.8.

Change-Id: Ie4f1b62294acd7f2d6ad743c6712fabf8e18bfb4
Reviewed-on: https://asterix-gerrit.ics.uci.edu/754
Reviewed-by: Till Westmann <tillw@apache.org>
diff --git a/content/docs/0.8.8-incubating/css/site.css b/content/docs/0.8.8-incubating/css/site.css
new file mode 100644
index 0000000..055e7e2
--- /dev/null
+++ b/content/docs/0.8.8-incubating/css/site.css
@@ -0,0 +1 @@
+/* You can override this file with your own styles */
\ No newline at end of file