Update docstrings. Change imports to fix thread exception on exit regression. Updated readme with google group link.

Author: Dan

README.rst

@@ -79,7 +79,7 @@ Frequently asked questions
   Can ParallelSSH forward my SSH agent?
 
 :A:
-  SSH agent forwarding, what `ssh -A` does on the command line, is supported and enabled by default. Creating an object as `ParallelSSH(forward_ssh_agent=False)` will disable that behaviour.
+  SSH agent forwarding, what `ssh -A` does on the command line, is supported and enabled by default. Creating an object as `ParallelSSHClient(forward_ssh_agent=False)` will disable that behaviour.
 
 :Q:
   Is proxying supported?
@@ -102,6 +102,11 @@ Frequently asked questions
   >>> client_key = paramiko.RSAKey.from_private_key_file('user.key')
   >>> client = ParallelSSHClient(['myhost1', 'myhost2'], pkey=client_key)
 
+:Q:
+   Is there a user's group for feedback and discussion about ParallelSSH?
+:A:
+   There is a public `ParallelSSH Google group <https://groups.google.com/forum/#!forum/parallelssh>`_ setup for this purpose - both posting and viewing are open to the public.
+
 ********
 SFTP/SCP
 ********

pssh.py

@@ -28,14 +28,14 @@
 See :mod:`pssh.ParallelSSHClient` and :mod:`pssh.SSHClient` for class documentation.
 """
 
+from gevent import monkey
+monkey.patch_all()
+import gevent.pool
 import warnings
 from socket import gaierror as sock_gaierror, error as sock_error
 import logging
 import paramiko
 import os
-import gevent.pool
-from gevent import monkey
-monkey.patch_all()
 
 host_logger = logging.getLogger('host_logger')
 handler = logging.StreamHandler()
@@ -228,7 +228,7 @@ def exec_command(self, command, sudo=False, user=None, **kwargs):
             command = 'bash -c "%s"' % command.replace('"', '\\"')
         logger.debug("Running command %s on %s", command, self.host)
         channel.exec_command(command, **kwargs)
-        logger.debug("Command finished executing")
+        logger.debug("Command started")
         while not (channel.recv_ready() or channel.closed):
             gevent.sleep(.2)
         return channel, self.host, stdout, stderr
@@ -357,7 +357,7 @@ def __init__(self, hosts,
                          'cmd' : <greenlet>,
             }}
         >>> # Print output as it comes in. 
-        >>> for host in output: print output[host]['stdout']
+        >>> for host in output: for line in output[host]['stdout']: print line
         [myhost1]     ls: cannot access /tmp/aasdfasdf: No such file or directory
         [myhost2]     ls: cannot access /tmp/aasdfasdf: No such file or directory
         >>> # Retrieve exit code after commands have finished