add landmark alignment notice

README.md

@@ -28,6 +28,8 @@ The ELEGANT Model Framework
 </div>
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+**If you want to train or test the model on your own images, please do the facial landmark alignment first. We preprocess the whole datasete using 5p alignment [here](https://github.com/Prinsphield/ELEGANT/blob/master/preprocess.py). However, you can use other alignment algorithm as long as it is consistent in both training and testing phases.**
+
 
 ## Requirements
 
@@ -93,7 +95,6 @@ We provide four types of mode for testing. Let me explain all the parameters for
 	- **One** integer is needed in the `--linear` mode.
 	- **Two** integers are required for the `--matrix` mode.
 
-
 ### 1. Swap Attribute
 
 We can swap the `Mustache` attribute of two images. Here `--swap_list 1` indicates the second