docs: Added more information about available composables (#19)

Author: zoey-kaiser

docs/content/1.getting-started/3.quick-start.md

@@ -37,4 +37,4 @@ const pdfSection = ref<HTMLElement | null>(null)
 We offer two separate options parameters, that allow you to customize your pdf export. 
 
 - The `documentOptions`, allow you to customize the general layout of your document. You can find the options [here](http://raw.githack.com/MrRio/jsPDF/master/docs/jsPDF.html).
-- The `options`, allow you to customize the conversion of your HTML to a canvas. You can find the options [here](http://raw.githack.com/MrRio/jsPDF/master/docs/module-html.html#~html).
+- The `htmlOptions`, allow you to customize the conversion of your HTML to a canvas. You can find the options [here](http://raw.githack.com/MrRio/jsPDF/master/docs/module-html.html#~html).

docs/content/1.getting-started/4.composables.md

@@ -0,0 +1,46 @@
+# Composables
+
+`nuxt-pdf` exposes multiple composables, that you can access to easily create pdfs through vue code.
+
+
+## exportToPDF
+
+Through this composable you can directly reference a HTML element, which will then be exported to a PDF. 
+
+```ts
+import { exportToPDF } from '#imports'
+
+const pdfSection = ref<HTMLElement | null>(null)
+
+const DOCUMENT_OPTIONS = {} // See all options: http://raw.githack.com/MrRio/jsPDF/master/docs/jsPDF.html
+const HTML_OPTIONS = {} // See all options: http://raw.githack.com/MrRio/jsPDF/master/docs/module-html.html#~html
+
+await exportToPDF('FILE_NAME.pdf', pdfSection, DOCUMENT_OPTIONS, HTML_OPTIONS)
+```
+
+## htmlToPdf
+
+`htmlToPdf` allows you to pass an HTML string and format it into a PDF. This can allow you to futhur customize the behaviour of how the module interacts with your UI.
+
+```ts
+import { htmlToPdf } from '#imports'
+
+const openInWindow = async (HTMLElement: HTMLElement) => {
+  const pdf = await htmlToPdf(HTMLElement,
+    undefined,
+    {
+      html2canvas: {
+        scale: 0.7,
+        useCORS: true
+      }
+    })
+  const totalPages = pdf.getNumberOfPages()
+  const pdfHeight = pdf.getPageHeight()
+  await pdf.html('<b>I am a custom pdf!!!</b>', {
+    x: 20,
+    y: (pdfHeight - 50) * totalPages // place in the bottom
+  })
+  const blob = pdf.output('blob')
+  window.open(URL.createObjectURL(blob), '_blank')
+}
+```