Add indexfile to obsolute quickstart section

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2477153002
NOTRY=true
DOCS_PREVIEW= https://skia.org/?cl=2477153002

Review-Url: https://codereview.chromium.org/2477153002

diff --git a/site/user/quick/index.md b/site/user/quick/index.md
new file mode 100644 (file)
index 0000000..c6c4973
--- /dev/null
+++ b/site/user/quick/index.md
@@ -0,0 +1,7 @@
+Quick Start Guides (Deprecated)
+===============================
+
+This section is obsolete and will be removed soon.
+See [How to build Skia](/user/build) for the best way to build Skia.
+
+Legacy guidelines (soon be removed):  [iOS](/user/quick/ios)