added PIL (image library) to requirements
added PIL (image library) to requirements

hzj123/56th,ken-muturi/pombola,mysociety/pombola,Hutspace/odekro,patricmutwiri/pombola,Hutspace/odekro,geoffkilpin/pombola,mysociety/pombola,patricmutwiri/pombola,Hutspace/odekro,patricmutwiri/pombola,ken-muturi/pombola,hzj123/56th,geoffkilpin/pombola,Hutspace/odekro,hzj123/56th,geoffkilpin/pombola,geoffkilpin/pombola,hzj123/56th,ken-muturi/pombola,hzj123/56th,Hutspace/odekro,geoffkilpin/pombola,ken-muturi/pombola,patricmutwiri/pombola,mysociety/pombola,ken-muturi/pombola,mysociety/pombola,mysociety/pombola,patricmutwiri/pombola,geoffkilpin/pombola,ken-muturi/pombola,patricmutwiri/pombola,hzj123/56th,mysociety/pombola