Edited nidm-primer and nidm-spec-template HTML docs.
Merge pull request #198 from dbkeator/master

Edited nidm-primer and nidm-spec-template HTML docs.
Small fixes and id changes in FSL example ground truth
Get URL to ProvStore from README
Update FSL README
Update SPM softwareRevision to 12.0
Merge pull request #203 from cmaumet/fslGT

Small fixes in: FSL ground truth and UpdateExampleReadmes.py script