Added comments

matrixpack.sh

@@ -62,7 +62,8 @@ packname=${dir##*/}
 slug=$(slugify "$packname")
 homeserver=$(slug_homeserver $2)
 
-# Checking if the homeserver exist
+# Checking if the homeserver exist.
+# If the homeserver does not exist, the file headers is not created
 curl "https://$homeserver" -I -o headers -s
 if test -f "headers"; then
     rm headers
@@ -71,7 +72,9 @@ else
     exit 1
 fi
 
-# Checking if the token exist
+# Checking if the token exist.
+# Save the error value on file "headers" and 
+# compare the error to verify the token
 curl -s -X POST  "https://$homeserver/_matrix/media/r0/upload?access_token=$token" | python3 -c "import sys, json; print(json.load(sys.stdin)['errcode'])" >> headers
 while read line; do
     if [[ ($line == "M_UNKNOWN") ]]