Indicate pip install is bash command

rodorgas · web-flow · commit b6bbe6a9d441 · 2017-07-01T11:14:10.000-03:00
diff --git a/README.rst b/README.rst
@@ -21,7 +21,7 @@ Install
 
 .. code:: bash
 
-  pip install pyfoscam
+  $ pip install pyfoscam
 
 Simple example
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