Link EOSets into the documentation

README.md

@@ -13,6 +13,9 @@
 and [SAR](https://eoreader.readthedocs.io/en/latest/sar.html) constellations, loading and stacking bands,
 clouds, DEM and spectral indices in a sensor-agnostic way.
 
+The goal of this library is to manage one satellite product at a time. 
+To handle more complicated sets of products (such as mosaics, pairs or time series), please consider using [`EOSets`](https://github.com/sertit/eosets).
+
 ## Managed optical constellations
 
 [![Sentinel-2 SAFE and Theia Sentinel-3 OLCI and SLSTR Landsat 1 to 9 Harmonized Landsat-Sentinel PlanetScope, SkySat and RapidEye Pleiades and Pleiades-Neo SPOT-6/7 and 4/5 Vision-1 Maxar (WorldViews, GeoEye) SuperView-1 GEOSAT-2](https://zupimages.net/up/23/22/j3mz.png)](https://eoreader.readthedocs.io/en/latest/optical.html)

docs/faq.md

@@ -51,6 +51,13 @@ For example, if you downloaded QGIS on Windows, you could simply put in your PAT
 ![qgis](https://zupimages.net/up/23/13/njvv.png)  
 All GDAL scripts, exe, DLL, etc. are stored in the `bin` folder.
 
+### I want to create a mosaic with EOReader, is it possible?
+
+It is not possible with EOReader only. 
+The goal of this library is to manage only one satellite product at a time. 
+To handle more complicated sets of products (such as mosaics, pairs or time series), please consider using [`EOSets`](https://github.com/sertit/eosets).
+
+
 ## SNAP
 
 > ⚠ Be sure to use SNAP 8.0 or more, and please verify that your software is up-to-date.

docs/main_features.md

@@ -35,6 +35,9 @@ prod = reader.open(path, output_path=output, remove_tmp=True)
 prod.output = os.path.join(output, prod.condensed_name)
 ```
 
+The goal of this library is to manage only one satellite product at a time. 
+To handle more complicated sets of products (such as mosaics, pairs or time series), please consider using [`EOSets`](https://github.com/sertit/eosets).
+
 ### Recognized paths
 
 **EOReader** always uses the directory containing the product files.