Updated Readme

README.md

-# Automatic calculation of Lattice-Boltzmann Weights
+# Lattice-Boltzmann weights 
 Python module that allows you to calculate the weights and velocities of 
 a stencil for a given order of isotropy, dimension and a list of velocities
 you want to include. 
@@ -22,7 +22,8 @@ AssignmentCollection for the implementation of the Lattice-Boltzmann method:
 
 MRT Moments (Repository not public yet)
 
-    pip install pystencils
+    $ pip install lbmpy 
+    
 ## Usage:
 Get lattices by their established name: