Update index.md

Author: robfatland

data/index.md

@@ -7,7 +7,8 @@
 ## Children
 
 
-- [api](https://github.com/robfatland/nexus/blob/gh-pages/data/api.md)
+- [api](https://github.com/robfatland/nexus/blob/gh-pages/data/api.md) keywords: azure, MSE544, periodic, table, oceanography, salinity, temperature, depth, NoSQL, function, app
+    - This includes the documentation for building a customized OOI shallow profiler API