readme update [ci skip]

README.md

@@ -5,6 +5,8 @@ Time series symbolic discretization (approximation) with SAX
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 This code is released under [GPL v.2.0](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html) and implements in Java:
   * Symbolic Aggregate approXimation (i.e., SAX) toolkit stack [1]
   * EMMA (Enumeration of Motifs through Matrix Approximation) algorithm for time series motif discovery [2]