fix a few things

README.md

@@ -2,6 +2,10 @@
 
 How to use:
 
-`!paste <text>` will paste text to your PrivateBin instance
+`!paste <text>` will create a paste that expires in 24 hours
+
+`!bpaste <text>` will create a one-time paste
+
 `!get <pasteid>#<password>` will retrieve a given paste
+
 `!echo <text>` will echo your message back

pbbot.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import sys
@@ -33,12 +33,12 @@ class PBBot(sleekxmpp.ClientXMPP):
         if msg['type'] in ('chat', 'normal'):
             if "!paste" in msg['body']:
                 arg = msg['body'].replace('!paste', '').strip()
-                output = subprocess.check_output(['/bin/env', 'pbincli', \
+                output = subprocess.check_output(['env', 'pbincli', \
                                                   'send', '--text', arg]).decode('utf-8')
                 msg.reply(output).send()
             elif "!bpaste" in msg['body']:
                 arg = msg['body'].replace('!paste', '').strip()
-                output = subprocess.check_output(['/bin/env', 'pbincli', \
+                output = subprocess.check_output(['env', 'pbincli', \
                                                   'send', '-B', '--text', arg]).decode('utf-8')
                 msg.reply(output).send()
             elif "!get" in msg['body']:
@@ -50,7 +50,7 @@ class PBBot(sleekxmpp.ClientXMPP):
                 arg = msg['body'].replace('!echo', '').strip()
                 msg.reply("Thanks for sending\n" + arg).send()
             else:
-                msg.reply("Commands: paste echo get").send()
+                msg.reply("Commands (prefix with !): paste bpaste echo get").send()
 
 if __name__ == '__main__':
     # Setup the command line arguments.