Add grid.md, update related files

Author: CrashTestJava

api/grid.md

@@ -0,0 +1,26 @@
+## Grid
+
+This is an object that defines the grid for a [tileset](tileset.md#tileset).
+
+## Grid()
+
+```lua
+Grid()
+Grid(otherGrid)
+```
+
+## Grid.tileSize
+
+```lua 
+local tileSize = grid.tileSize
+```
+
+Returns the [tile](tile.md#tile) width and height of a [tileset](tileset.md#tileset), as a [size](size.md#size).
+
+## Grid.origin
+
+```lua 
+local point = grid.origin
+```
+
+Returns the origin of the grid as a [point](point.md#point).

api/tileset.md

@@ -1,20 +1,49 @@
 # Tileset
 
+A set of [tiles](tile.md#tile).
+
 ## Tileset.name
 
-## Tileset.grid
+```lua
+local name = tileset.name
+tileset.name = name
+```
+
+Gets or sets the name of this tileset.
 
 ## Tileset.baseIndex
 
+```lua
+local baseindex = tileset.baseIndex
+tileset.baseIndex = baseindex
+```
+
+Gets or sets the base index of this tileset.
+
 ## Tileset.color
 
 ## Tileset.data
 
+```lua
+local data = tileset.data
+tileset.data = data
+```
+
+Gets or sets the user-defined data related to this tileset (a text string).
+
 ## Tileset.properties
 
 Access user-defined and extension-defined
 [properties](properties.md#properties) of this tileset.
 
+## Tileset.grid
+
+```lua
+local grid = tileset.grid
+```
+
+Returns the [grid](grid.md#grid) of this tileset.
+
 ## Tileset:tile()
 
 ```lua

sidebar.md

@@ -39,6 +39,7 @@ Classes/objects
   * [Events](api/events.md#events)
   * [Frame](api/frame.md#frame)
   * [GraphicsContext](api/graphicscontext.md#graphicscontext)
+  * [Grid](api/grid.md#grid)
   * [Image](api/image.md#image)
   * [ImageSpec](api/imagespec.md#imagespec)
   * [KeyEvent](api/keyevent.md#keyevent)