made warning on preloading libs more prominent

Author: ennerf

README.md

@@ -8,8 +8,9 @@ MatlabInput allows MATLAB users to get input from keyboards and joysticks in a n
 * Extract the .zip file into a folder of your choice
 * Add the unzipped files to the [MATLAB path](http://www.mathworks.com/help/matlab/ref/path.html)
 
-* The underlying libraries are typically loaded automatically at the first call. However, if you are using other Java libraries, e.g., 
-[HebiCam](https://github.com/HebiRobotics/HebiCam) or the [Hebi API](http://hebirobotics.com/matlab), it is better to load all libraries before instantiating any objects.
+## Warning: Problems when used with other Java libraries
+
+Typically the underlying Java libraries are loaded automatically at the first call. However, there is a limitation in MATLAB that prevents Java libraries to be loaded once any Java object is instantiated. Thus, if you are using other Java libraries, e.g., [HebiCam](https://github.com/HebiRobotics/HebiCam) or the [Hebi API](http://hebirobotics.com/matlab), you will need to pre-load the libraries manually before using them.
 
 ```matlab
 HebiKeyboard.loadLibs();