fix choice, and add scoop/smoothie install commands

install/pre.ps1

@@ -1,27 +1,36 @@
 if (Get-Command sm  -Ea Ignore){
-    "@
+"@
 A Smoothie installation has been detected, what would you like to do?
 
-R - Reinstall smoothie (clean install)
-U - Update smoothie to a newer version
+Press R to Reinstall Smoothie (clean install)
+Press V to update Smoothie to a newer Version
+Press U to uninstall Smoothie
 
 @"
-switch (choice.exe /C RU /N | Out-Null){
+switch (choice.exe /C RVU /N | Out-Null){
     1{
         scoop.cmd uninstall smoothie
         scoop.cmd install smoothie
+        pause
         exit
     }
     2{
         scoop.cmd update smoothie
+        pause
         exit
     }
     3{
         scoop.cmd uninstall smoothie
+        pause
+        exit
     }
 }
 }
 
+if (-Not(Get-Command scoop.cmd -Ea Ignore)){
+    Invoke-RestMethod -Uri http://get.scoop.sh | Invoke-Expression
+}
+
 if (-Not(Get-Command git -Ea Ignore)){
     scoop.cmd install git
 }
@@ -41,3 +50,5 @@ if(Get-Command ffmpeg -Ea Ignore){
 }else{
     scoop.cmd install ffmpeg
 }
+
+scoop.cmd install utils/smoothie