update readme (again)

Author: ardunn

README.md

@@ -8,8 +8,8 @@ An automatic "black-box" yet interpretable prediction engine for materials prope
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-### automatminer is AutoML for materials
-Automatminer is a tool for automatically creating machine learning pipelines. Automatminer's pipelines include automatic featurization with matminer, feature reduction, and AutoML backend handling. Put in a materials dataset, get out a machine that predicts materials properties.
+### automatminer = autoML for materials
+Automatminer is a tool for automatically creating machine learning pipelines. Automatminer's pipelines include automatic featurization with [matminer](https://github.com/hackingmaterials/matminer), feature reduction, and AutoML backend handling. Put in a materials dataset, get out a machine that predicts materials properties.
 
 ### automatminer works on many kinds of data
 Automatminer can make pipelines to accurately predict the properties from many kinds of materials data: