Merge pull request #9 from satra/enh/freesurfer

WIP: updated freesurfer object model notebook
fix: removed versioning from uri
rf: refactored encoding freesurfer stats tables
fix: updated to address nolan's comments
enh: updated freesurfer conversion script and freesurfer terms file
enh: added file service script
enh: updated fsterms file to include all measures computed
fix: fsterms generation and adding a flag to ignore previously created collections.
Merge pull request #10 from satra/enh/stats

converting stats files to nidm
reorganize files
Merge pull request #11 from satra/master

reorganizing file structure
moved straggling script
Merge pull request #12 from satra/master

moving last script
first shot at a generic csv2prov converter
enh: refined csv2prov to store row-based entities
enh: csv to prov graph conversion and script
fix: typos
fix: one more typo
fix: remove unnecessary output dir
enh: updated adhd200 csv to prov to rdf conversion with federated query