Updated requirements.txt, removed simplejson
Updated requirements.txt, removed simplejson

cellcounter/cellcounter,haematologic/cellcountr,haematologic/cellcountr,oghm2/hackdayoxford,haematologic/cellcounter,cellcounter/cellcounter,cellcounter/cellcounter,oghm2/hackdayoxford,cellcounter/cellcounter,haematologic/cellcounter,haematologic/cellcounter