update install script with the latest goreleaser config

this includes installing windows binaries for 32 bit and 64 bit systems

scripts/install.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 set -e
-# Code generated by godownloader on 2019-12-28T14:36:27Z. DO NOT EDIT.
+# Code generated by godownloader on 2020-12-23T14:59:45Z. DO NOT EDIT.
 #
 
 usage() {
@@ -66,6 +66,8 @@ get_binaries() {
     darwin/amd64) BINARIES="helm-schema-gen" ;;
     linux/386) BINARIES="helm-schema-gen" ;;
     linux/amd64) BINARIES="helm-schema-gen" ;;
+    windows/386) BINARIES="helm-schema-gen" ;;
+    windows/amd64) BINARIES="helm-schema-gen" ;;
     *)
       log_crit "platform $PLATFORM is not supported.  Make sure this script is up-to-date and file request at https://github.com/${PREFIX}/issues/new"
       exit 1
@@ -89,6 +91,9 @@ tag_to_version() {
 }
 adjust_format() {
   # change format (tar.gz or zip) based on OS
+  case ${OS} in
+    windows) FORMAT=zip ;;
+  esac
   true
 }
 adjust_os() {