Update docs: add read and write CTF

docs/api.md

@@ -228,4 +228,19 @@
 
    const $a = createSignal(0);
    <MyComp {...{ $a, $b: $a }} $c={$a} d={$a[0]()} />
+
+
+// Read and write CTF
+
+   import { read, write } from 'babel-plugin-reactivars-solid'
+
+   let $sig = 0
+   const sigGetter = read($sig)
+   const sigSetter = write($sig)
+
+   // ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
+
+   const $sig = createSignal(0)
+   const sigGetter = $sig[0]
+   const sigSetter = $sig[1]
 

docs/guide.md

@@ -301,3 +301,22 @@ const Comp1 = () => {
   </>
 }
 ```
+
+
+## Read and write CTFs
+
+You can use the `read` and `write` compile time functions to get the getter and setter of a reactive variable directly without using the `$` function.
+
+```js
+import { read, write } from 'babel-plugin-reactivars-solid'
+
+let $sig = 0
+const sigGetter = read($sig)
+const sigSetter = write($sig)
+
+// ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
+
+const $sig = createSignal(0)
+const sigGetter = $sig[0]
+const sigSetter = $sig[1]
+```