Update

README.rst

@@ -6,18 +6,28 @@ This Library get the next products using Sentinel-2 images:
 ==============================================================
   * Download
   * UnZip
+  * Read Images
+  * Resample
+  * SubSet
 
 Required modules:
 ====================
 
   * Python 2.7 x64 : https://www.python.org/downloads/
   * Sentinelsat    : https://github.com/sentinelsat/sentinelsat
+  * SNAP ESA       : http://step.esa.int/main/download/  
+
 
 Installation:
 ==============================
 
 ``$ pip install sentinelsat``
 
+``$ sudo apt update``
+
+``$ sudo apt install default-jre``
+
+Install SNAP and cofigure python2.7
 
 Example:
 ========