Simplify static analysis badges in README.md

Author: jimmysoda

README.md

@@ -1,15 +1,10 @@
 pdal-c: PDAL C API
 ==================
 
-[![Build Status](https://travis-ci.com/Simverge/pdal-c.svg?branch=master)](https://travis-ci.com/Simverge/pdal-c)[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=Simverge_pdal-c&metric=alert_status)](https://sonarcloud.io/dashboard?id=Simverge_pdal-c)
+[![Build Status](https://travis-ci.com/Simverge/pdal-c.svg?branch=master)](https://travis-ci.com/Simverge/pdal-c)
+[![Coverity Scan](https://scan.coverity.com/projects/17631/badge.svg)](https://scan.coverity.com/projects/simverge-pdal-c)
+[![SonarCloud](https://sonarcloud.io/api/project_badges/measure?project=Simverge_pdal-c&metric=alert_status)](https://sonarcloud.io/dashboard?id=Simverge_pdal-c)
 
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-
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 *pdal-c* is a C API for the Point Data Abstraction Library ([PDAL](http:/github.com/PDAL/PDAL))
 and is compatible with PDAL 1.7 and later.