Add note about possible package conflicts

Author: mikebronner

README.md

@@ -26,6 +26,11 @@ relationships. This package is an attempt to address those requirements.
 -   PHP >= 7.1.3
 -   Laravel 5.4 - 5.6
 
+### Possible Conflicting Packages
+Any packages that also override `newEloquentModel()` from the `Model` class will
+likely conflict with this package. So far these may include the following:
+- [grimzy/laravel-mysql-spatial](https://github.com/grimzy/laravel-mysql-spatial)
+
 [![installation guide cover](https://user-images.githubusercontent.com/1791050/36356190-fc1982b2-14a2-11e8-85ed-06f8e3b57ae8.png)](https://vimeo.com/256318402)
 
 ## Installation