Add README

Author: stes

docs-api/README.md

@@ -0,0 +1,20 @@
+# Datajoint API docs
+
+To generate the documentation, run
+
+``` bash
+(cd sphinx && make html)
+```
+
+Docs will be placed in the `docs/` folder.
+
+## Editing the docs
+
+All source files are in `sphinx/source`.
+Docs are currently structured as follows:
+
+```
+sphinx/source/conf.py         # Sphinx configuration file
+sphinx/source/index.rst       # This is the docs front page
+sphinx/source/datajoint.*.rst # Docs for different modules
+```