Update install-binary.sh

Author: itscaro

install-binary.sh

@@ -124,6 +124,9 @@ downloadFile() {
 installFile() {
   tar xzf "$PLUGIN_TMP_FILE" -C "$HELM_TMP"
   HELM_TMP_BIN="$HELM_TMP/diff/bin/diff"
+  if [ "${OS}" = "windows" ]; then
+    HELM_TMP_BIN="$HELM_TMP_BIN.exe"
+  fi
   echo "Preparing to install into ${HELM_PLUGIN_DIR}"
   mkdir -p "$HELM_PLUGIN_DIR/bin"
   cp "$HELM_TMP_BIN" "$HELM_PLUGIN_DIR/bin"