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