Add list of in-progress/planned SDKs.

diff --git a/doc/sdk/index.html.textile.liquid b/doc/sdk/index.html.textile.liquid
index 10423feb1f1f839fbd1a62bafa32e03a2b582ce5..061e96421a1769f148351fa87cdc48101963bf48 100644 (file)
--- a/doc/sdk/index.html.textile.liquid
+++ b/doc/sdk/index.html.textile.liquid
@@ -10,3 +10,8 @@ This section documents how to access the Arvados API and Keep using various prog
 * "Perl SDK":{{site.baseurl}}/sdk/perl/index.html
 * "Ruby SDK":{{site.baseurl}}/sdk/ruby/index.html
 * "Command line SDK":{{site.baseurl}}/sdk/cli/index.html ("arv")
+
+SDKs not yet implemented:
+
+* Rails SDK: Workbench uses an ActiveRecord-like interface to Arvados. This hasn't yet been extracted from Workbench and packaged as a gem.
+* R and Java: We plan to support these, but they have not been implemented yet.