add readme

script/research/crypsinous/linearindependence/README.md

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+# target function approximation
+
+excluding use of floats, and division, only +,-,* are allowed.
+
+# consequences
+
+- hard coded tunning.
+- public reward function.
+
+# comparison of original target to approximation
+
+![alt text](https://github.com/darkrenaissance/darkfi/blob/master/script/research/crypsinous/linearindependence/plot.png?raw=true)