Squashed 'third_party/osqp/' content from commit 33454b3e23

Change-Id: I056df0582ca06664e86554c341a94c47ab932001
git-subtree-dir: third_party/osqp
git-subtree-split: 33454b3e236f1f44193bfbbb6b8c8e71f8f04e9a
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/docs/interfaces/ruby.rst b/docs/interfaces/ruby.rst
new file mode 100644
index 0000000..195cf19
--- /dev/null
+++ b/docs/interfaces/ruby.rst
@@ -0,0 +1,7 @@
+.. _ruby_interface:
+
+
+Ruby
+========
+
+The ruby interface can be installed as a Ruby gem and is documented `here <https://www.rubydoc.info/gems/osqp/>`_.