DEV: Add guidelines for adding default queries

DEV: Add guidelines for adding default queries

diff --git a/lib/queries.rb b/lib/queries.rb
index 2ee1cd8..d47b1fa 100644
--- a/lib/queries.rb
+++ b/lib/queries.rb
@@ -1,6 +1,11 @@
 class Queries
   def self.default
+    # WARNING: Edit the query hash carefully
     # For each query, add id, name and description here and add sql below
+    # Feel free to add new queries at the bottom of the hash in numerical order
+    # If any query has been run on an instance, it is then saved in the local db
+    # Locally stored queries are updated from the below data only when they are run again
+
     queries = {
         "most-common-likers": {
             "id": -1,

GitHub sha: 1d97ad6e