Updating PipeScript.HelpOut.ps1 (#56)

Author: StartAutomating

docs/ValidateExtension.md

@@ -0,0 +1,78 @@
+
+ValidateExtension
+-----------------
+### Synopsis
+Validates Extensions
+
+---
+### Description
+
+Validates that a parameter or object has one or more extensions.
+
+This creates a [ValidatePattern] that will ensure the extension matches.
+
+---
+### Examples
+#### EXAMPLE 1
+```PowerShell
+{        
+    param(
+    [ValidateExtension(Extension=".cs", ".ps1")]
+    $FilePath
+    )
+} |.>PipeScript
+```
+
+#### EXAMPLE 2
+```PowerShell
+{
+    param(
+    [ValidateExtension(Extension=".cs", ".ps1")]
+    $FilePath
+    )
+```
+$FilePath
+} -Parameter @{FilePath=".ps1"}
+#### EXAMPLE 3
+```PowerShell
+{
+    param(
+    [ValidateExtension(Extension=".cs", ".ps1")]
+    $FilePath
+    )
+```
+$FilePath
+} -Parameter @{FilePath="foo.txt"}
+---
+### Parameters
+#### **Extension**
+
+The extensions being validated.
+
+
+
+|Type            |Requried|Postion|PipelineInput|
+|----------------|--------|-------|-------------|
+|```[String[]]```|true    |1      |false        |
+---
+#### **VariableAST**
+
+A variable expression.
+If this is provided, will apply a ```[ValidatePattern({})]``` attribute to the variable, constraining future values.
+
+
+
+|Type                         |Requried|Postion|PipelineInput |
+|-----------------------------|--------|-------|--------------|
+|```[VariableExpressionAst]```|false   |named  |true (ByValue)|
+---
+### Syntax
+```PowerShell
+ValidateExtension [-Extension] <String[]> [<CommonParameters>]
+```
+```PowerShell
+ValidateExtension [-Extension] <String[]> [-VariableAST <VariableExpressionAst>] [<CommonParameters>]
+```
+---
+
+