Add touch function to create new empty text file

Define rm to work more like Unix/Linux

* Support -r and -f flags also -rf or -fr
* Support specifying multiple paths to remove

utils.ps1

@@ -13,6 +13,9 @@ function cd {
   Set-Location -Path $Path
 }
 
+# Define rm to work like Unix/Linux
+# * Support -r and -f flags also -rf or -fr
+# * Support specifying multiple paths to remove
 function rm {
   Param (
     [Parameter(
@@ -35,7 +38,7 @@ function rm {
   }
 }
 
-# Add new aliases
+# Define touch to create a new empty text file
 function touch {
   Param (
     [string]$Path