update map, upload test data

Author: waeiski

README.md

@@ -54,6 +54,10 @@ If you want to adjust some parameters of the bundling, such as weights or bundli
 
 Please note, the script expects the coordinates to be in WGS84 [(EPSG:4326)](https://epsg.io/4326)
 
+### Test files
+
+We have provided two test CSV files that demonstrate the data structure of the required CSV files. These files can be found under the `example_data` directory.
+
 ## References
 Wallinger, M., Archambault, D., Auber, D., Nöllenburg, M., & Peltonen, J. (2022). Edge-Path Bundling: A Less Ambiguous Edge Bundling Approach. IEEE Transactions on Visualization and Computer Graphics, 28(1), 313–323. https://doi.org/10.1109/TVCG.2021.3114795
 

eb_example_map.png

@@ -0,0 +1,88 @@
+NUTS_ID,X,Y
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+FI1C2,24.325364576872644,60.9188971564958
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+LT026,23.308085475341425,55.93874590597663
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+FI1C1,22.541706013555775,60.55645527918497
+FI1D7,26.324400929880486,67.72905319391599
+FI1D1,27.851024073509063,61.8864300089415
+FI1D3,29.939580119044155,62.91768527506135
+FI1D8,28.71438219098686,64.52113527313989
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+NO0A2,6.425899704821229,60.92311554762187
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+FI1D5,24.064536596036664,63.60825843143464
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+SE211,14.407787179045851,57.53314702368657
+LT011,25.23430824630901,54.82290358019803
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+SE110,18.164334464477847,59.47069494553967
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+SE212,14.571419344671714,56.79423784334511
+NO0A3,7.64611789347775,62.58261086713749
+NO071,14.730543215867351,66.9065446136677
+NO0B1,-8.394795196916613,71.01473841518549
+EE009,25.624422954299604,59.05963582562235
+NO0B2,18.339805843738635,78.85669834998292