feat: rewrite README in English, update plugin info, and localize scripts

- Rewrite README.md in English with detailed features, installation,
  usage, and configuration instructions
- Update plugin name and repository references to "tmux-remind"
- Change script comments and popup titles from Italian to English
- Standardize less status line in show_calendar.sh to English

scripts/main.sh

@@ -1,11 +1,10 @@
 #!/usr/bin/env bash
 
 set -euo pipefail
-set -x
 
 CURRENT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
-# Funzione per leggere opzioni tmux con default
+# Function to read tmux options with default values
 get_tmux_option() {
     local option="$1"
     local default_value="$2"
@@ -18,23 +17,23 @@ get_tmux_option() {
     fi
 }
 
-# Esempio: leggi configurazione utente
+# Example: read user configuration
 # my_option=$(get_tmux_option "@plugin_option" "default_value")
 
-function get_italian_datetime {
+function get_datetime {
     date "+%d/%m/%Y %H:%M"
 }
 
 function show_reminders {
     local datetime
-    datetime=$(get_italian_datetime)
-    tmux display-popup -T "#[align=centre]Impegni di oggi - $datetime" -w 60% -h 60% -x C -y C -E -- "$CURRENT_DIR/show_reminders.sh"
+    datetime=$(get_datetime)
+    tmux display-popup -T "#[align=centre]Today's Reminders - $datetime" -w 60% -h 60% -x C -y C -E -- "$CURRENT_DIR/show_reminders.sh"
 }
 
 function show_calendar {
     local datetime
-    datetime=$(get_italian_datetime)
-    tmux display-popup -T "#[align=centre]Prossime 2 settimane - $datetime" -w 99% -h 99% -x C -y C -E -- "$CURRENT_DIR/show_calendar.sh"
+    datetime=$(get_datetime)
+    tmux display-popup -T "#[align=centre]Next 2 Weeks - $datetime" -w 99% -h 99% -x C -y C -E -- "$CURRENT_DIR/show_calendar.sh"
 }
 
 function main {