Re-level non-docs content to top of repo and rename content→docs

docs/references/index.md

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+---
+seo:
+    description: Reference documentation for the XRP Ledger protocol, API methods, and more. 
+---
+# References
+
+The XRP Ledger References provides reference documentation for the XRP Ledger protocol, API methods, and more. 
+
+## Client Libraries
+
+Use these libraries to access the XRP Ledger from your programming language of choice.
+
+{% card-grid %}
+
+{% xrpl-card title="JavaScript / TypeScript" body="xrpl.js - a JavaScript/TypeScript library" href="https://js.xrpl.org/" image="/img/logos/javascript.svg" imageAlt="Javascript logo" /%}
+
+{% xrpl-card title="Python" body="xrpl.py - a pure Python library" href="https://xrpl-py.readthedocs.io/" image="/img/logos/python.svg" imageAlt="Python logo" /%}
+
+{% xrpl-card title="Java" body="xrpl4j - a pure Java library" href="https://javadoc.io/doc/org.xrpl/" image="/img/logos/java.svg" imageAlt="Java logo" /%}
+
+{% /card-grid %}
+
+[See more...](/references/client-libraries/)
+
+## XRP Ledger Protocol Reference
+
+{% card-grid %}
+
+{% xrpl-card title="Basic Data Types" body="Format and meaning of fundamental data types." href="/references/protocol/data-types/basic-data-types/" /%}
+
+{% xrpl-card title="Ledger Data Formats" body="Learn about individual entries that comprise the XRP Ledger's shared state data." href="/references/protocol/ledger-data/" /%}
+
+{% xrpl-card title="Transaction Reference" body="Definitions for all the protocol's transaction types and their results." href="/references/protocol/transactions/" /%}
+
+{% xrpl-card title="Binary Format" body="Conversion between JSON and canonical binary format for XRP Ledger transactions and other objects." href="/references/protocol/binary-format/" /%}
+
+{% /card-grid %}
+
+## HTTP / WebSocket APIs
+
+{% card-grid %}
+
+{% xrpl-card title="API Conventions" body="Describes data types and formats of the HTTP APIs (JSON-RPC and WebSocket) as implemented in the rippled server." href="/references/http-websocket-apis/api-conventions/" /%}
+
+{% xrpl-card title="Public API Methods" body="Public API methods for use by any client attached to the server." href="/references/http-websocket-apis/public-api-methods/" /%}
+
+{% xrpl-card title="Admin API Methods" body="Admin methods for trusted personnel in charge of keeping the rippled server operational." href="/references/http-websocket-apis/admin-api-methods/" /%}
+
+{% xrpl-card title="Peer Port Methods" body="Special API methods for sharing network topology and status metrics, served on the XRPL Peer Protocol port." href="/references/http-websocket-apis/peer-port-methods/" /%}
+
+{% /card-grid %}
+
+## xrp-ledger.toml File
+
+The xrp-ledger.toml file provides machine-readable information about your usage of the XRP Ledger to other XRP Ledger users.
+
+- [**Serving the File**](/references/xrp-ledger-toml/#serving-the-file)
+- [**Contents**](/references/xrp-ledger-toml/#contents)
+- [**CORS Setup**](/references/xrp-ledger-toml/#cors-setup)
+- [**Domain Verification**](/references/xrp-ledger-toml/#domain-verification)
+- [**Account Verification**](/references/xrp-ledger-toml/#account-verification)