private void logoutToServer(final String token){

        String url = getString(R.string.API_URL) + "/social/revoke-token";

        StringRequest postRequest = new StringRequest
                (Request.Method.POST, url, new Response.Listener<String>() {

                    @Override
                    public void onResponse(String response) {


                        Log.d("RESPONSE FROM SERVER", response.toString());


                    }
                }, new Response.ErrorListener() {

                    @Override
                    public void onErrorResponse(VolleyError error) {
                        // TODO: Handle error

                    }
                 }){

            @Override
            protected Map<String, String> getParams() throws AuthFailureError {

                Map<String, String> params = new HashMap<String, String>();
                params.put("token", token);
                params.put("client_id", getString(R.string.CLIENT_ID));
                params.put("client_secret", getString(R.string.CLIENT_SECRET));

                return params;

            }
        };

        RequestQueue queue = Volley.newRequestQueue(this);
        queue.add(postRequest);

    }