update install script

Author: simbo

install.sh

@@ -38,7 +38,10 @@ VERSION=v1
 
 script=$(curl -so- https://raw.githubusercontent.com/simbo/release-version-script/${VERSION}/release.sh)
 if [[ "${script:0:3}" = "404" ]]; then
-  t="${TERM:-"dumb"}"; printf "\n$(tput -T$t setaf 1)ERROR: version '${VERSION}' not found$(tput -T$t sgr0)\n"; exit 1
+  t="${TERM:-"dumb"}"
+  printf "\n$(tput -T$t setaf 1)ERROR: could not find version '${VERSION}'$(tput -T$t sgr0)"
+  printf "\nSee ${b}${u}https://github.com/simbo/release-version-script/tags${x} for available versions.\n"
+  exit 1
 fi
 bash -c "$script" -s $1
 EOF