[Couchdb Wiki] Update of "HttpViewApi" by PaulDavis

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The following page has been changed by PaulDavis:
http://wiki.apache.org/couchdb/HttpViewApi

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  ''key'', ''startkey'', and ''endkey'' need to be properly JSON encoded values (for example, startkey="string" for a string value).
  
- If you specify ''?count=0'' you don't get any data, but all meta-data for this View. The number of documents in this View for example.
+ If you specify ''?count=0'' you don't get any data, but all meta-data for this View. The number of documents in this View for example. If ''count'' is specified as a negative number, you will receive that many documents prior to the specified ''startkey''.
  
  The ''skip'' option should only be used with small values, as skipping a large range of documents this way is inefficient (it scans the index from the startkey and then skips N elements, but still needs to read all the index values to do that). For efficient paging use ''startkey'' and/or ''startkey_docid''.