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Added Codacy Badge to README.md

Signed-off-by: Murat Karslioglu <2c34c3ca1955b450435e43592ccc589187d9f7df@mayadata.io>

AmitKumarDas/maya,openebs/maya,openebs/maya,prateekpandey14/maya,AmitKumarDas/maya,openebs/maya,prateekpandey14/maya