anchor.diff:  Note: all returned images will be in the _thumbnail_ view.
   
   + Parameters
  -    + since (optional, string, `2014-11-05T10:00:00Z`) ... A timestamp in ISO 8601 format: _YYYY-MM-DDThh:mmZ_. Only image transformations created at or after this time are returned.
  +    + since (optional, string, `2014%2D11%2D05T10%3A00%3A00Z`) ... A timestamp in ISO 8601 format: _YYYY-MM-DDThh:mmZ_. Only image transformations created at or after this time are returned.
       + name (optional, string, `Future%25`) ... Image transformation name pattern to search for. [SQL Wildcards](http://www.w3schools.com/sql/sql_wildcards.asp) can be used.
  -    + sort_by = `created_at DESC` (optional, string) ... Sort results by date of creation or name?
  +    + sort_by = `created%5Fat%20DESC` (optional, string) ... Sort results by date of creation or name?
       
           + Values
  -            + `created_at ASC`
  -            + `created_at DESC`
  -            + `name ASC`
  -            + `name DESC`
  +            + `created%5Fat%20ASC`
  +            + `created%5Fat%20DESC`
  +            + `name%20ASC`
  +            + `name%20DESC`
   
   + Response 200 (application/json)
   
  
positive.code: 
  ## Roadmap
  
  - Extended metadata
  - Compression
  - Support for async operations
  - Support for JSON-P callbacks
  
negative.code: See Image resource section for Image visibility explanation and for description of the Image object schema.
  
  + Parameters
      + since (optional, string, `2014%2D11%2D05T10%3A00%3A00Z`) ... A timestamp in ISO 8601 format: _YYYY-MM-DDThh:mmZ_. Only images uploaded at or after this time are returned.
      + name (optional, string, `Future%25`) ... Image name pattern to search for. [SQL Wildcards](http://www.w3schools.com/sql/sql_wildcards.asp) can be used.
      + sort_by = `created%5Fat%20DESC` (optional, string) ... Sort results by date of creation or name?
      
          + Values
              + `created%5Fat%20ASC`
              + `created%5Fat%20DESC`
              + `name%20ASC`
              + `name%20DESC`
  
  + Response 200 (application/json)
  
  