Update README.md

Author: Helene

README.md

@@ -7,7 +7,10 @@ The ***IBM Spectrum Scale bridge for Grafana*** could be used for exploring IBM
 Grafana Bridge is a standalone Python application. It translates the IBM Spectrum Scale metadata and performance data collected by the [IBM Spectrum Scale performance monitoring tool (ZiMon)](https://www.ibm.com/support/knowledgecenter/en/STXKQY_4.2.3/com.ibm.spectrum.scale.v4r23.doc/bl1adv_PMToverview.htm) to the query requests acceptable by the [Grafana integrated openTSDB plugin](https://grafana.com/docs/features/datasources/opentsdb/).
 
 
-![](/docs/bridge_overview.PNG)
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+  <img src="/docs/bridge_overview.PNG" />
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 ## Setup