- removing Autoconf version requirement to allow travis to work
- removing Autoconf version requirement to allow travis to work

stanmihai4/json,whackashoe/json,Cloudage/json,bestwpw/json,robertmrk/json,whoshuu/json,nickhen/json,theodelrieu/json,aestuarium/json,Newbrick/json,hunter-packages/json,hunter-packages/json,stanmihai4/json,kaidokert/json,Newbrick/json,xdcesc/json,hunter-packages/json,kaidokert/json,whackashoe/json,stanmihai4/json,daminetreg/json,erichkeane/json,theodelrieu/json,AALEKH/json,kaidokert/json,emvivre/json,nlohmann/json,xzmagic/json,nlohmann/json,nlohmann/json,silverweed/json,Newbrick/json,ruppmatt/json