added some more installation instructions

README.md

@@ -26,6 +26,13 @@ $ python setup.py build
 $ python setup.py install
 ```
 
+One of `s2cloudless` dependecies is `lightgbm` package. If having problems during installation please
+check [LightGBM installation guide](https://lightgbm.readthedocs.io/en/latest/Installation-Guide.html).
+
+Before installing `s2cloudless` on **Windows** it is recommended to install package `shapely` from
+[Unofficial Windows wheels repository](https://www.lfd.uci.edu/~gohlke/pythonlibs/)
+
+
 ## Input: Sentinel-2 scenes
 
 The input to cloud detector are Sentinel-2 images. In particular, the cloud detector requires the following 10