message: Fix comment mistake for Matrix
diff: @@ -3,8 +3,8 @@ import Point from './Point';
  /**
  * The PixiJS Matrix class as an object, which makes it a lot faster,
  * here is a representation of it :
  - * | a | b | tx|
  - * | c | d | ty|
  + * | a | c | tx|
  + * | b | d | ty|
  * | 0 | 0 | 1 |
  *
  * @class
  @@ -14,8 +14,8 @@ export default class Matrix
  {
  /**
  * @param {number} [a=1] - x scale
  - * @param {number} [b=0] - y skew
  - * @param {number} [c=0] - x skew
  + * @param {number} [b=0] - x skew
  + * @param {number} [c=0] - y skew
  * @param {number} [d=1] - y scale
  * @param {number} [tx=0] - x translation
  * @param {number} [ty=0] - y translation
  