added troubleshooting to readme

README.md

@@ -59,4 +59,12 @@ The following steps were reproduced in that order on a fully updated Ubuntu 15.1
     git clone https://somerepo.url/vipra.git
     cd vipra
     ./build.sh
-    ```
\ No newline at end of file
+    ```
+    
+### Troubleshooting
+
+If you run into the following error while running the `build.sh` script or `maven install` directly: `Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.3`
+
+```
+sudo /var/lib/dpkg/info/ca-certificates-java.postinst configure
+```
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