add deis to $PATH command

add deis to $PATH command

Author: babarinde

docs/using_deis/install-client.rst

@@ -18,7 +18,11 @@ Install the latest ``deis`` client for Linux or Mac OS X with:
     $ curl -sSL http://deis.io/deis-cli/install.sh | sh
 
 The installer puts ``deis`` in your current directory, but you should move it
-somewhere in your $PATH.
+somewhere in your $PATH:
+
+.. code-block:: console
+
+    $ sudo ln -fs $PWD/deis /usr/local/bin/deis
 
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