Add SymbolRun to allow adding symbols inline

docs/usage/paragraph.md

@@ -2,7 +2,7 @@
 
 > Everything (text, images, graphs etc) in OpenXML is organised in paragraphs.
 
-!> Paragraphs requires an understanding of [Sections](usage/sections.md).
+!> Paragraphs requires an understanding of [Sections](sections.md).
 
 You can create `Paragraphs` in the following ways:
 
@@ -16,11 +16,15 @@ const paragraph = new Paragraph("Short hand Hello World");
 
 ### Children Method
 
-This method is useful for adding different `text` with different styles or adding `images` inline.
+This method is useful for adding different [text](text.md) with different styles, [symbols](symbols.md), or adding [images](images.md) inline.
 
 ```ts
 const paragraph = new Paragraph({
-    children: [new TextRun("Lorem Ipsum Foo Bar"), new TextRun("Hello World")],
+    children: [
+        new TextRun("Lorem Ipsum Foo Bar"),
+        new TextRun("Hello World"),
+        new SymbolRun("F071"),
+    ],
 });
 ```
 

docs/usage/symbols.md

@@ -0,0 +1,53 @@
+# Symbol Runs
+
+!> SymbolRuns require an understanding of [Paragraphs](paragraph.md).
+
+You can add multiple `symbol runs` in `Paragraphs` along with [text runs](text.md) using the Paragraph's `children` property.
+
+```ts
+import { Paragraph, TextRun, SymbolRun } from "docx";
+
+const paragraph = new Paragraph({
+    children: [
+        new TextRun("This is a checkbox: "),
+        new SymbolRun("F071")
+    ],
+});
+```
+
+## Specifying symbol font
+
+By default symbol runs will use the `Wingdings` font. To switch fonts, pass an object instead of a string to the `SymbolRun` constructor and specify `char` and `symbolfont` properties:
+
+```ts
+const symbol = new SymbolRun({
+    char: "F071",
+    symbolfont: "Arial",
+});
+```
+
+## Example symbols
+
+Symbols are specified by their hexidecimal code. Ref http://officeopenxml.com/WPtextSpecialContent-symbol.php. Below are some examples.
+
+- `F071`: empty checkbox
+- `F043`: thumbs up
+- `F04A`: smile
+- `F04C`: frown
+- `F022`: scissors
+- `F0F0`: right arrow
+- `F0FE`: checked box
+
+## Typographical Emphasis
+
+Symbol runs can have their display modified just like text runs. For example, they can be bolded and italicized:
+
+```ts
+const symbol = new SymbolRun({
+    char: "F071",
+    bold: true,
+    italics: true,
+});
+```
+
+See the [text run](text.md) documentation for more info.