[Workers] Added parametrization of osapi_compute_worker and workers.

Change-Id: Ib916c4e7631e5d058d1c352a670a92edb05adc8b
diff --git a/README.rst b/README.rst
index 152d9a7..ee64e32 100644
--- a/README.rst
+++ b/README.rst
@@ -23,6 +23,7 @@
         cpu_allocation_ratio: 8.0
         ram_allocation_ratio: 1.0
         disk_allocation_ratio: 1.0
+        workers: 8
         bind:
           public_address: 10.0.0.122
           public_name: openstack.domain.com