diff --git a/README.md b/README.md
index 6fe815e..29168a8 100644
--- a/README.md
+++ b/README.md
@@ -10,18 +10,19 @@ See [sample.json](sample.json)
 
 ## Specification Description 
 
-| element           | type   | name                    | description                                                                                 | 
-|-------------------|--------|-------------------------|---------------------------------------------------------------------------------------------| 
-| uuid              | string | File                    | unique URI to file                                                                          | 
-| projection        | string | Projection              | CRS of the datasource in full WKT format                                                    | 
-| bbox              | array  | Bounding Box            | Pair of min and max coordinates in CRS units, (min_x, min_y, max_x, max_y)                  | 
-| footprint         | string | Datasource footprint    | WKT format, describing the actual footprint of the imagery                                  | 
-| gsd               | number | Ground Spatial Distance | Average ground spatial distance (resolution) of the datasource imagery, expressed in meters | 
-| file_size         | number | File Size               | File size on disk in bytes                                                                  | 
-| acquisition_start | string | Acquisition Date Start  | First date of acquisition in UTC (Combined date and time representation)                    | 
-| acquisition_end   | string | Acquisition Date End    | Last date of acquisition in UTC (Combined date and time representation) (optional)          | 
-| title             | string | Title                   | Human friendly title of the image                                                           | 
-| platform          | string | Type of imagery         | List of possible platform sources limited to satellite, aircraft, UAV, balloon, kite        | 
-| provider          | string | Imagery Provider        | Provider/owner of the OIN bucket                                                            | 
-| contact           | string | Contact                 | Name and email address of the data provider                                                 | 
-| properties        | object | Properties              | Additional properties about the image (optional)                                            | 
+| element | type | name | description | 
+| --- | --- | --- | --- | 
+| uuid | string | File | unique URI to file | 
+| projection | string | Projection | CRS of the datasource in full WKT format | 
+| bbox | array | Bounding Box | Pair of min and max coordinates in CRS units, (min_x, min_y, max_x, max_y) | 
+| footprint | string | Datasource footprint | WKT format, describing the actual footprint of the imagery | 
+| gsd | number | Ground Spatial Distance | Average ground spatial distance (resolution) of the datasource imagery, expressed in meters | 
+| file_size | number | File Size | File size on disk in bytes | 
+| acquisition_start | string | Acquisition Date Start | First date of acquisition in UTC (Combined date and time representation) | 
+| acquisition_end | string | Acquisition Date End | Last date of acquisition in UTC (Combined date and time representation) (optional) | 
+| title | string | Title | Human friendly title of the image | 
+| platform_name | string | Name of platform | Examples: WorldView 3 or eBee RTK | 
+| platform_type | string | Type of platform | List of possible platform sources limited to satellite, aircraft, UAV, balloon, kite |  
+| provider | string | Imagery Provider | Provider/owner of the OIN bucket | 
+| contact | string | Contact | Name and email address of the data provider | 
+| properties | object | Properties | Additional properties about the image (optional) |