make unzip requirement more obvious
make unzip requirement more obvious

eHealthAfrica/couchdb-lucene,rnewson/couchdb-lucene,ehealthafrica-ci/couchdb-lucene,rnewson/couchdb-lucene,ehealthafrica-ci/couchdb-lucene,eHealthAfrica/couchdb-lucene,ehealthafrica-ci/couchdb-lucene,eHealthAfrica/couchdb-lucene,rnewson/couchdb-lucene