docs(readme): gotchas

Author: MarkPieszak

README.md

@@ -339,6 +339,10 @@ Well now, your Client-side Angular will take over, and you'll have a fully funct
 
 > When building components in Angular 5 there are a few things to keep in mind.
 
+ - Make sure you provide Absolute URLs when calling any APIs. (The server can't understand relative paths, so `/api/whatever` will fail).
+ 
+ - API calls will be ran during a server, and once again during the client render, so make sure you're using transfering data that's important to you so that you don't see a flicker.
+
  - **`window`**, **`document`**, **`navigator`**, and other browser types - _do not exist on the server_ - so using them, or any library that uses them (jQuery for example) will not work. You do have some options, if you truly need some of this functionality:
     - If you need to use them, consider limiting them to only your client and wrapping them situationally. You can use the Object injected using the PLATFORM_ID token to check whether the current platform is browser or server. 
 
@@ -444,7 +448,7 @@ Nothing's ever perfect, but please let me know by creating an issue (make sure t
 
 [![MIT License](https://img.shields.io/badge/license-MIT-blue.svg?style=flat)](/LICENSE) 
 
-Copyright (c) 2016-2017 [Mark Pieszak](https://github.com/MarkPieszak)
+Copyright (c) 2016-2018 [Mark Pieszak](https://github.com/MarkPieszak)
 
 ----