!234 Add eadydict to requirements.txt

From: @pkuliuliu
Reviewed-by: @liu_luobin,@zhidanliu,@jxlang910
Signed-off-by: @jxlang910

requirements.txt

@@ -6,3 +6,4 @@ pytest >= 4.3.1
 wheel >= 0.32.0
 setuptools >= 40.8.0
 scikit-learn >= 0.23.1
+easydict >= 1.9