Properly add the ./treenexus submodule
Update treenexus submodule pointer
Improve the way we find treenexus nexson files
Add a note to the readme about using the treenexus submodule
Default to port 8000 correctly in our tests when OTOL_API_PORT is not defined
[travis] Run nexson-validator tests
[travis] Fix capitalization of our build icon
[travis] Go back to the correct directory to run API tests after nexson-validator tests
checking for outer nexml element
testing for nexml key at base level
Merge branch 'master' of github.com:OpenTreeOfLife/api.opentreeoflife.org
cursory examination of keys in nexml dict
partial OTU validation
more tests
test for id in nexml element
testing for ot:studyID
test of id in otus element
test of otu list in otus element
test of otu list in otus element. test files
test of id in an otu element