Fix basemap issue (#190)

Author: giswqs

samgeo/common.py

@@ -14,6 +14,8 @@
 import geopandas as gpd
 import matplotlib.pyplot as plt
 
+os.environ["GOOGLE_MAPS_API_KEY"] = "API-KEY"
+
 
 def is_colab():
     """Tests if the code is being executed within Google Colab."""