moved note about .display() only working in a html document to top of .display() section and also mentioned that there needs to be a canvas element

Author: mjrlowe

README.md

@@ -75,11 +75,13 @@ Returns the finished maze
 
 This is the function which displays the maze.
 
+_Note that this function (currently) only works in a html document with a canvas element._
+
 It takes in an object with the properties listed below.
 
 | Property | Description | Valid Values | Default Value |
 |-|-|-|-|
-| canvas | The canvas to display the maze on. | A canvas element (e.g. `document. getElementsByTagName("canvas")[0]`). | The first canvas element in the html. [Note that this function (currently) only works in a html document.] |
+| canvas | The canvas to display the maze on. | A canvas element (e.g. `document. getElementsByTagName("canvas")[0]`). | The first canvas element in the html. |
 | coloringMode | How the cells are colored. | `"normal"`: regular coloring, `"distance"`: each cell is colored by a distance from a point (WIP). More coloring modes coming soon hopefully. Anything other than the valid values specififed defaults to normal coloring. | `"normal"`  |
 | colorScheme | The color scheme to use when `coloringMode` is not `"normal"`. | This can either be `"grayscale"`, `"rainbow"` or an array or hex codes. | `"rainbow"` |
 | mainColor | This is the color of the walls (or line). | Any hex value as a string | `"#000"` |