message: Updated shadow options
diff: @@ -50,10 +50,11 @@ Quickly and easily create PowerPoint presentations with a few simple JavaScript
  - [Chart Size/Formatting Options](#chart-sizeformatting-options)
  - [Chart Axis Options](#chart-axis-options)
  - [Chart Data Options](#chart-data-options)
  + - [Chart Line Shadow Options](#chart-line-shadow-options)
  - [Chart Examples](#chart-examples)
  - [Adding Text](#adding-text)
  - [Text Options](#text-options)
  - - [Shadow Options](#shadow-options)
  + - [Text Shadow Options](#text-shadow-options)
  - [Text Examples](#text-examples)
  - [Adding Tables](#adding-tables)
  - [Table Layout Options](#table-layout-options)
  @@ -399,10 +400,20 @@ slide.addChart({TYPE}, {DATA}, {OPTIONS});
  | `gridLineColor` | string | | `000000` | grid line color | hex color code. Ex: `{ gridLineColor:'0088CC' }` |
  | `lineDataSymbol` | string | | `circle` | symbol used on line marker | `circle`,`dash`,`diamond`,`dot`,`none`,`square`,`triangle` |
  | `lineDataSymbolSize` | number | points | `6` | size of line data symbol | 1-256. Ex: `{ lineDataSymbolSize:12 }` |
  +| `lineShadow` | object | | | data line shadow options | `'none'` or [shadow options](#Chart-Line-Shadow-Options) |
  | `lineSize` | number | points | `2` | thickness of data line | 1 and more. Ex: `{ lineSize: 1 }` |
  -| `lineShadow` | object | | *shadow* | shadow of data line | `'none'` or [shadow object](#shadow-options) |
  | `valueBarColors` | boolean | | `false` | forces chartColors on multi-data-series | `true` or `false` |
  +### Chart Line Shadow Options
  +| Option | Type | Unit | Default | Description | Possible Values |
  +| :----------- | :------ | :------ | :-------- | :------------------ | :--------------------------------------- |
  +| `type` | string | | outer | shadow type | `outer` or `inner` |
  +| `angle` | number | degrees | | shadow angle | 0-359. Ex: `{ angle:180 }` |
  +| `blur` | number | points | | blur size | 1-256. Ex: `{ blur:3 }` |
  +| `color` | string | | | text color | hex color code. Ex: `{ color:'0088CC' }` |
  +| `offset` | number | points | | offset size | 1-256. Ex: `{ offset:8 }` |
  +| `opacity` | number | percent | | opacity | 0-1. Ex: `opacity:0.75` |
  +
  ### Chart Examples
  ```javascript
  var pptx = new PptxGenJS();
  @@ -494,7 +505,7 @@ slide.addText([ {text:'TEXT', options:{OPTIONS}} ]);
  | `underline` | boolean | | `false` | underline text | `true` or `false` |
  | `valign` | string | | | vertical alignment | `top` or `middle` or `bottom` |
  -### Shadow Options
  +### Text Shadow Options
  | Option | Type | Unit | Default | Description | Possible Values |
  | :----------- | :------ | :------ | :-------- | :------------------ | :--------------------------------------- |
  | `type` | string | | outer | shadow type | `outer` or `inner` |
  