added dataset, platform, instrument to search
extra "dataset"
minor updates to messages and formatting
Merge pull request #21 from justgo129/master

Defined classes for URIs in turtle per PROV-O
version 1.07
Merge branch 'master' of /usr/local/projects/repos/tuba
added identifier in turtle for files, replaced dcterms:identifier with dbpeedia:SHA-1 to call SHA-1