Adding EqualityComparison (#123)

Author: StartAutomating

docs/EqualityComparison.md

@@ -0,0 +1,60 @@
+
+EqualityComparison
+------------------
+### Synopsis
+Allows equality comparison.
+
+---
+### Description
+
+Allows most equality comparison using double equals (==).
+
+Many languages support this syntax.  PowerShell does not.    
+
+This transpiler enables equality comparison with ==.
+
+---
+### Examples
+#### EXAMPLE 1
+```PowerShell
+Invoke-PipeScript -ScriptBlock {
+    $a = 1    
+    if ($a == 1 ) {
+        "A is $a"
+    }
+}
+```
+
+#### EXAMPLE 2
+```PowerShell
+{
+    $a == "b"
+} | .>PipeScript
+```
+
+---
+### Parameters
+#### **AssignmentStatementAST**
+
+The original assignment statement.
+
+
+
+|Type                          |Requried|Postion|PipelineInput |
+|------------------------------|--------|-------|--------------|
+|```[AssignmentStatementAst]```|true    |1      |true (ByValue)|
+---
+### Syntax
+```PowerShell
+EqualityComparison [-AssignmentStatementAST] <AssignmentStatementAst> [<CommonParameters>]
+```
+---
+### Notes
+This will not work if there is a constant on both sides of the expression
+
+
+if ($null == $null) { "this will work"} 
+if ('' == '') { "this will not"}
+
+
+