Execute drush commands via a telegram bot.
You need to set up your own telegram bot first of all.
At the moment, supported commands are:
 - /cache : flushes the site cache
 - /cget: obtains info about site config values (example: _/cget system.site_ )
 - /cron: Executes the cron
 - /st: like drush status
 - /updb: updates de database
