[Couchdb Wiki] Update of "IsoFormattedDateAsDocId" by DougShawhan

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The "IsoFormattedDateAsDocId" page has been changed by DougShawhan.
http://wiki.apache.org/couchdb/IsoFormattedDateAsDocId?action=diff&rev1=7&rev2=8

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  {{{#!javascript
  {
     "sum_by_day": {
-        "map": "function(doc) {\n  var dt = new Date(doc._id);\n  
emit(dt.getDate(), 1);\n}",
+        "map": "function(doc) {\n  var dt = new Date(doc._id);\n  
emit(dt.getDate() doc.widget, 1);\n}",
         "reduce": "function(keys, values, rereduce) {\n   return 
sum(values)\n}"
     }
  }