Add documentation for spr

README.md

@@ -55,7 +55,7 @@ const codex = new Codex("http://localhost:3000");
 To use a module, you need to use the await syntax. If the module is not loaded yet, it will be imported first and then cached in memory.
 
 ```js
-const marketplace = await codex.marketplace();
+const marketplace = await codex.marketplace;
 ```
 
 ### Error handling
@@ -214,7 +214,7 @@ The following API assume that you have already a data module loaded, example:
 
 ```js
 const codex = new Codex("http://localhost:3000");
-const data = await codex.data();
+const data = await codex.data;
 ```
 
 #### cids
@@ -261,13 +261,13 @@ const upload = await data.upload(file, (loaded: number, total: number) => {
 await upload.result();
 ```
 
-### Node
+### Debug
 
 The following API assume that you have already a node module loaded, example:
 
 ```js
 const codex = new Codex("http://localhost:3000");
-const data = await codex.node();
+const data = await codex.debug;
 ```
 
 #### setLogLevel
@@ -294,3 +294,24 @@ Example:
 ```js
 const info = await debug.info();
 ```
+
+### Node
+
+The following API assume that you have already a node module loaded, example:
+
+```js
+const codex = new Codex("http://localhost:3000");
+const node = await codex.node;
+```
+
+#### spr
+
+Get Node's SPR
+
+- returns Promise<string>
+
+Example:
+
+```js
+const spr = await node.spr();
+```