add a task to clean up the list

Author: minhtuannguyen

.gitignore

@@ -12,3 +12,5 @@ pom.xml.asc
 .lein-failures
 .nrepl-port
 .cpcache/
+
+.idea/*

README.md

@@ -1,2 +1,10 @@
 # mobads
-Ads Domains to block for mobile devices
+contains a minimal set of dns domains which should be blocked on mobile device. See dns.txt
+
+# Sanitize
+This task going into the list and remove out-of-date entries by checking them with `nslookup`
+It requires `babashka` in order to run
+
+```shell
+bb sanitize  
+```

bb.edn

@@ -0,0 +1,9 @@
+{:min-bb-version "0.8.0"
+ :paths          ["src" "test"]
+ :deps           {}
+
+ :tasks          {:requires ([sanitize :as sanitize]
+                             [test-runner :as test])
+                  test      test/run-tests
+                  sanitize  sanitize/sanitize}
+ }