use Message.reply_* calls instead of Bot.

This is in line with recent development of the python-telegram-bot
package

handlers.py

@@ -14,10 +14,8 @@ def ping(bot, update):
     try:
         sp.check_output(['ping', '-c', '1', 'lcm.mi.infn.it'])
     except CalledProcessError, e:
-        bot.send_message(chat_id=update.message.chat_id,
-                        text='LCM is unreachable')
-    bot.send_message(chat_id=update.message.chat_id,
-                    text='LCM is reachable')
+        update.message.reply_text(text='LCM is unreachable')
+    update.message.reply_text(text='LCM is reachable')
 
 
 def is_web_up(bot, update):
@@ -26,25 +24,21 @@ def is_web_up(bot, update):
         conn = httplib.HTTPConnection('lcm.mi.infn.it:443')
         conn.request('HEAD', '/')
         s = conn.getresponse().status
-        bot.send_message(chat_id=update.message.chat_id,
-                        text='Web server replied with code %s ' % s)
+        update.message.reply_text(text='Web server replied with code %s ' % s)
     except StandardError:
-        bot.send_message(chat_id=update.message.chat_id,
-                        text='An error occurred while connecting')
+        update.message.reply_text(text='An error occurred while connecting')
 
 
 def vietnam(bot, update):
     """Spout wise words"""
-    bot.send_message(chat_id=update.message.chat_id,
-                    text='Ricordate, ragazzi, LCM è come il Vietnam. Una volta \
-entrati, è impossibile uscirne!')
+    update.message.reply_text(text='Ricordate, ragazzi, LCM è come il Vietnam.'
+                              'Una volta entrati, è impossibile uscirne!')
 
 
 def sell_your_mother(bot, update):
     """Remind people not to disclose passwords"""
     pic_id = 'AgADBAADbasxG9JPlAQNlEW3ML5sk_bEXxkABHKAFZ1ZzBZsNvMBAAEC'
-    bot.sendPhoto(chat_id=update.message.chat_id, photo=pic_id,
-                  caption='cit. Mandelli')
+    update.message.reply_photo(photo=pic_id, caption='cit. Mandelli')
 
 
 def print_msg_info(bot, update):
@@ -62,4 +56,4 @@ def error(bot, update, error):
 def abuse_150(bot, update):
     """Verbally abuse incompetent LCM collaborators"""
     insult = np.random.choice(insults)
-    bot.send_message(chat_id=update.message.chat_id, text=insult)
+    update.message.reply_text(text=insult)