Add 'flavio'

flavio.md

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+# Content of the folder
+In the `Code/Selection/flavio` folder, one finds subfolder `Measurements`, where the previous measurements by ATLAS, CMS and the LHCb B+->K*+(Kspi+)mumu measurement are saved as `.yml` files.
+
+The sensitivity from toy studies done for the B+->K*+(Kspi+)mumu analysis are saved in `SensitivityFromToys`.
+
+Then, the scripts needed to produce the prodoctuvity plot and the plot are saved.
+# Sensitivity plots production using flav.io
+
+In this folder, the sensiticity plots assume that K+pi0 channel will be as sensitive as the KSpi+ channel.
+
+
+## installation
+* Make sure you are using python3!
+* Install flavio with 
+    ```
+    pip3 install flavio
+    ```
+
+## produce 2D sensitivity plots
+The statistical sensitivity from the B+->K*+(Kspi+)mumu toys is stored in `./SensitivityFromToys/`. The sensitivity is automatically loaded using the `parse_sensitivities.py`.
+
+* Load the sensitivity for flavio:
+    ```
+    python3 parse_sensitivities.py
+    ```
+* Plot the sensitivity in C9-C10 plane
+    ```
+    python3 -i flavio_sensitivity.py
+    ```
+