Update bundler and ruby

.travis.yml

@@ -10,7 +10,7 @@ addons:
     - dnsutils
     - idn
 rvm:
-- 2.4.1
+- 2.6.3
 before_install:
   - openssl aes-256-cbc -K $encrypted_9e883639804e_key -iv $encrypted_9e883639804e_iv -in deploy-key.enc -out deploy-key -d
   - chmod 600 deploy-key
@@ -18,6 +18,9 @@ before_install:
   - ssh-add deploy-key
   - git config user.name "TLD List Bot"
   - git config user.email "tld-bot@captnemo.in"
+  # Update bundler: https://docs.travis-ci.com/user/languages/ruby/
+  - gem update --system
+  - gem install bundler
 script:
   - wget "https://data.iana.org/TLD/tlds-alpha-by-domain.txt" --output-document tlds.txt
   - ./scan.sh

scan.sh

@@ -1,5 +1,12 @@
 #!/bin/bash
 
+# This script runs a scan for all available TLDs, and notes
+# down the TLDs that resolve to `website/template.md`
+# 
+# It also puts some information about the IP Adress from where
+# the scan was run (might be relevant for DNS lookups) into
+# `website/_data/ip.json`. Structure is at ipapi.co
+
 for domain in $(grep -v '^#' tlds.txt); do 
     RESULT=$(dig +time=1 +tries=1 +short "$domain" | head -c -1 | tr '\n' '@' | sed 's/@/`,`/g' | grep -v "connection timed out")
     if [ ! -z "$RESULT" ]; then