feat: add props in mountComponent (#4)

Author: Vaibhav Singh

README.md

@@ -95,6 +95,7 @@ writing Vue component tests.
 **Parameters:**
 - `componentPath` – location of the component file (`.jsx`) to be mounted
 - `options` – this can include:
+  - `props` - properties to be passed to the Vue component, this will be serialized to JSON
   - `plugins`: if needed, a store (VueX or Pinia) and a router can be loaded together with the component
   - `mocks`: this can be a list of url calls that can be mocked (will be passed to [sinon](https://sinonjs.org/) automatically); at the moment only [Fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API) calls can be mocked, but XHR support will be added soon.
 - `callback` – an optional callback function which will be called with the component element
@@ -105,6 +106,14 @@ writing Vue component tests.
 const component = await browser.mountComponent('/src/components/Form.vue')
 ```
 
+```js
+const component = await browser.mountComponent('/src/components/Welcome.vue', {
+  props: {
+    username: 'John Doe'
+  }
+})
+```
+
 ```js
 const component = await browser.mountComponent('/src/components/Form.vue', {
   plugins: {