update documentation to include information about lifecycle hooks

Author: wes-harper-ibotta

docs/guides/common-tips.md

@@ -27,6 +27,10 @@ const wrapper = shallowMount(Component)
 wrapper.vm // the mounted Vue instance
 ```
 
+### Lifecycle Hooks
+
+When using either the `mount` or `shallowMount` methods, you can expect your component to respond to all lifecycle events. However, it is important to note that `beforeDestroy` and `destroyed` _will not be triggered_ unless the component is manually destroyed using `Wrapper.destroy()`.
+
 ### Writing asynchronous tests using `nextTick` (new)
 
 By default, Vue batches updates to run asynchronously (on the next "tick"). This is to prevent unnecessary DOM re-renders, and watcher computations ([see the docs](https://vuejs.org/v2/guide/reactivity.html#Async-Update-Queue) for more details).