Comment JSON while keeping validity

commented.json

{
  "" : "// Start Zepto ",
  "zepto"                  : "../../lib/zepto/zepto",
  "zepto-extras"           : "../../lib/zepto/zepto-extras",
  "zepto-slide-transition" : "../../lib/zepto/zepto-slide-transition",
  "zepto-fx-methods"       : "../../lib/zepto/zepto-fx-methods",
  "" : "// End Zepto ",
  
  "" : "// Start jQuery ",
  "jquery"                 : "../../lib/jquery/jquery-1.10.2",
  "" : "// End jQuery ",
  
  "" : "// Start _ ",
  "underscore"             : [
    "//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.5.1/underscore-min",
    "../../lib/underscore/underscore-min"
  ],
  "" : "// End _ ",
  
  "" : "// Start require plugins ",
  "async"                  : "../../lib/requirejs/async",
  "text"                   : "../../lib/requirejs/text",
  "json"                   : "../../lib/requirejs/json",
  "msg"                    : "../../lib/requirejs/msg",
  "is"                     : "../../lib/requirejs/is",
  "is-api"                 : "../../lib/requirejs/is-api",
  "" : "// End require plugins ",
  
  "" : "// Start Modernizr ",
  "modernizr"              : "../../lib/modernizr-2.6.2.min",
  "" : "// End Modernizr ",
  
  "" : "// Start ext ",
  "parsley"                : "../../lib/ext/parsley",
  "sprintf"                : "../../lib/ext/sprintf",
  "query-parser"           : "../../lib/ext/jquery-queryParser",
  "picture"                : "../../lib/ext/picturefill",
  "waypoints"              : "../../lib/ext/waypoints",
  "maskedinput"            : "../../lib/ext/inputmask.bundle",
  "" : "// End ext ",
  
  "" : "// Start polyfills ",
  "match-media"            : "../../lib/polyfills/matchMedia",
  "match-media-listener"   : "../../lib/polyfills/matchMedia.addListener",
  "" : "// End polyfills ",
  
  "" : "// Start breakpoint detection ",
  "breakpoints"            : "../../lib/breakpoints/breakpoints"
}