PLD: add docs for submitting a JSON XForm
PLD: add docs for submitting a JSON XForm

sounay/flaminggo-test,mainakibui/kobocat,hnjamba/onaclone,spatialdev/onadata,mainakibui/kobocat,spatialdev/onadata,awemulya/fieldsight-kobocat,awemulya/fieldsight-kobocat,kobotoolbox/kobocat,spatialdev/onadata,hnjamba/onaclone,qlands/onadata,piqoni/onadata,qlands/onadata,hnjamba/onaclone,hnjamba/onaclone,sounay/flaminggo-test,piqoni/onadata,jomolinare/kobocat,GeoODK/onadata,awemulya/fieldsight-kobocat,jomolinare/kobocat,GeoODK/onadata,kobotoolbox/kobocat,jomolinare/kobocat,GeoODK/onadata,kobotoolbox/kobocat,GeoODK/onadata,sounay/flaminggo-test,smn/onadata,sounay/flaminggo-test,jomolinare/kobocat,spatialdev/onadata,smn/onadata,qlands/onadata,kobotoolbox/kobocat,qlands/onadata,mainakibui/kobocat,piqoni/onadata,smn/onadata,awemulya/fieldsight-kobocat,piqoni/onadata,mainakibui/kobocat,smn/onadata