add more api docs

docs/.gitignore

@@ -1,4 +1,4 @@
 hugo/
-/**/grpc_apis/ocis/
+grpc_apis/
 mutagen.yml.lock
 helpers/output/*

docs/apis/_index.md

@@ -1,3 +1,9 @@
 ---
 title: APIs
+geekdocRepo: https://github.com/owncloud/ocis
+geekdocEditPath: edit/master/docs/apis/
+geekdocFilePath: _index.md
+geekdocCollapseSection: true
 ---
+
+Infinite Scale provides a large set of different **application programming interfaces (APIs)**. Infinite Scale is built by microservices. That means many calls to "functions" in the code are remote calls.