Updated README.md to flesh out Solr config
Updated README.md to flesh out Solr config

Primarily, this meant introspecting the system to find and export `$CATALINA_OUT`. Without that being set, Tomcat was looking for config in all the wrong places.
micongrin/plugin_SolrSearch-WMI,CATCH-FACT/SolrSearch-VB,anuragji/SolrSearch,scholarslab/SolrSearch,anuragji/SolrSearch,CATCH-FACT/SolrSearch-VB,scholarslab/SolrSearch,scholarslab/SolrSearch,CATCH-FACT/SolrSearch-VB,CATCH-FACT/SolrSearch-VB,micongrin/plugin_SolrSearch-WMI,micongrin/plugin_SolrSearch-WMI,scholarslab/SolrSearch,anuragji/SolrSearch,anuragji/SolrSearch