Update library.json

Adding library_type into the schema
Update library.json

adding example of library_type
Merge remote-tracking branch 'origin/master' into 1357-audit-experiments
Draft of the audit experiments, not working but for lrowe review
Cleaning up the test structure to be concordant with Laurence's vision
Adding the embedding of the approvals to antibodies and experiments
Commenting out the antibody.approvals embedding.@nikhilRP needs to help figure out why this did not work.
'
Adding tests for the experiments audits.
Fixing the audit scripts to get the names out of objects
Merging in the master as it has been a while on this branch
Merge remote-tracking branch 'origin/master' into 1357-audit-experiments
Fix for inner object merged properties
Nikhil found the underliying probelem to not being able to embed approvals.
Merging it in to my branch.
Merge remote-tracking branch 'origin/1357_fix' into 1357-audit-experiments
Adding back the embedded with @nikhilRP fix
Merge pull request #230 from ENCODE-DCC/1357-audit-experiments

1357 audit experiments