finish packaging and update readme

README.md

 # Batmen Tools
 
-Set of useful tools to set up experiements with batmen like workload generation from swf files.  
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+Set of useful tools to set up experiements with batmen like workload generation from swf files.  
+
+## Install
+You can either directly execute the scripts you want do use, or install the package with 
+
+```
+pip install .
+```
+
+or 
+
+```
+pip install git+https://gitlab.irit.fr/sepia-pub/mael/batmen-tools.git
+```
+
+## Dependancies
+- pandas
+- numpy
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