Adding link for code coverage results to README.
Adding link for code coverage results to README.

Change-Id: Ie587192998ef86044c24f2633d85646aa1b08fe9
Signed-off-by: Steve S. Sylvester <b0839a0405c3f908ea9b10b668e5564aefda5af5@intel.com>

cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm,cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm