chore(readme): add readme w/ known caveats

README.md

@@ -1,4 +1,3 @@
-
 # RBRecruiter v1.0.2-stable - Integrated Human Resources Management System
 
 **Are the big name HR apps too bloated and overkill for your online community? Check RBRecruiter out to see if its right for you!**
@@ -42,6 +41,18 @@ Tech stack:
  - [jQuery](https://jquery.com/)
  - [Icons by FontAwesome](https://fontawesome.com/)
  
+# Known caveats
+
+**Incompatible PHP extensions**
+
+The following PHP extensions are known to cause problems throughout the app (resulting in numerous errors):
+
+ - [PHP PSR - PSR Interfaces](https://pecl.php.net/package/psr)
+
+This is because the extension conflicts with a package Laravel uses, [Monolog](https://github.com/Seldaek/monolog), which is required for logging across the whole application. Oftentimes, removing this extension with your system's package manager or disabling it in ``php.ini`` does the trick and gets things to work again.
+
+*This issue should not affect versions below 1.0.0.*
+
  # Stability
  
 At the moment, each new feature goes into its separate branch so that ``main`` remains stable. When the features being worked on are ready and tested, they are merged onto ``main``, and a new release can be started. The main branch is write-protected.