readme MD

README.md

@@ -30,6 +30,13 @@ sentinel.downloadProducts(products,".")
 ```
 ## WKT Polygon bounding box (`geosentinel/polygonToBox.py`)
 Some times you may have a WKT Polygon string that is to long for sentinel API to accept, in this case you can use this script to obtain the bounding box of the polygon and use it with **APISentinel**. This script also has the option to be used with ``gdal_translate`` id the second parameter is set to **False** .
+
+### Dependencies
+```bash
+sudo apt-get install gdal-bin
+pip install GDAL
+```
+
 ### Example
 ```python
 from geosentinel import APISentinel