minor tweak to INSTALL file
minor tweak to INSTALL file

Liaojinghui/json-framework,AbelSu131/json-framework,puvanarajan/json-framework,Jawbone/json-framework,HSFGitHub/json-framework,ramoslin02/json-framework,adonoho/json-framework,stig/json-framework,adamvduke/json-framework,0xc010d/json-framework,SinnerSchraderMobileMirrors/json-framework,nett55/json-framework,hkg36/SBJson_amenmod,duanhjlt/json-framework,0xc010d/json-framework,sporttech/json-framework,hkg36/SBJson_amenmod,adamvduke/json-framework,cnbin/json-framework,AlexanderMazaletskiy/json-framework