add a path check to make sure we can find xrefs.json
add a path check to make sure we can find xrefs.json

geneontology/amigo,raymond91125/amigo,geneontology/amigo,geneontology/amigo,geneontology/amigo,raymond91125/amigo,geneontology/amigo,raymond91125/amigo,geneontology/amigo,geneontology/amigo,raymond91125/amigo,raymond91125/amigo,raymond91125/amigo