Update README.md

Author: areenberg

README.md

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 # Purpose
-By employing this library, the user will be able to evaluate any transient or steady-state M/M/C/K queueing network that can be defined by an adjacency matrix, and a number of additional parameter. The model *does not* have to exist on product form. A weighted directed adjacency matrix is used by the class `create` to automatically construct the infinitesimal generator for the network at hand. The resulting object is then used as input in the class `evaluate` to retrieve the behavior of the network.
+By employing this library, the user will be able to evaluate any transient or steady-state M/M/C/K queueing network that can be defined by an adjacency matrix and a number of additional parameter. The model *does not* have to exist on product form. A weighted directed adjacency matrix is used by the class `create` to automatically construct the infinitesimal generator for the network at hand. The resulting object is then used as input in the class `evaluate` to retrieve the behavior of the network.
 
 # Basic Overview