Move help from Comment-based to md. Relocate functions (sans help)

mdHelp/Add-ExcelName.md

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+---
+external help file: ImportExcel-help.xml
+Module Name: ImportExcel
+online version:
+schema: 2.0.0
+---
+
+# Add-ExcelName
+
+## SYNOPSIS
+Adds a named-range to an existing Excel worksheet.
+
+## SYNTAX
+
+```
+Add-ExcelName [-Range] <ExcelRange> [[-RangeName] <String>] [<CommonParameters>]
+```
+
+## DESCRIPTION
+It is often helpful to be able to refer to sets of cells with a name rather than using their co-ordinates; Add-ExcelName sets up these names.
+
+## EXAMPLES
+
+### EXAMPLE 1
+```
+PS\> Add-ExcelName -Range $ws.Cells[$dataRange] -RangeName $rangeName
+```
+
+$WS is a worksheet, and $dataRange is a string describing a range of cells - for example "A1:Z10" -  which will become a named range, using the name in $rangeName.
+
+## PARAMETERS
+
+### -Range
+The range of cells to assign as a name.
+
+```yaml
+Type: ExcelRange
+Parameter Sets: (All)
+Aliases:
+
+Required: True
+Position: 1
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -RangeName
+The name to assign to the range. If the name exists it will be updated to the new range.  If no name is specified, the first cell in the range will be used as the name.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: 2
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### CommonParameters
+This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see [about_CommonParameters](http://go.microsoft.com/fwlink/?LinkID=113216).
+
+## INPUTS
+
+## OUTPUTS
+
+## NOTES
+
+## RELATED LINKS