Problem with Part Two: indexing some example data

[ntung]

Following instructions in README.md, I am stucking at Part Two for indexing some example data.
Run: curl http://localhost:8983/solr/documents/update --data-binary data/gwas-catalog-annotation-data.csv -H 'Content-type:application/csv'

The error is:

<title>Error 404 Not Found</title>

HTTP ERROR 404
Problem accessing /solr/documents/update. Reason:
    Not Found
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[mattflax]

I've made some small changes to the Solr start and stop scripts to make them work better with Solr 4 as well as Solr 5. I've tested against Solr 4.10.3, and this section of the demo now works as it should.