Squashed commit of the following:

commit 77268a0a95f22910eff43e961c384c1d30625560
Merge: 492bd6c 95f8f5e
Author: yuanboshe <yuanboshe@yeah.net>
Date:   Mon Oct 6 19:46:43 2014 +0800

    Merge branch 'feature_amcl' of https://github.com/yuanboshe/exbot_xi into feature_amcl

commit 492bd6ca0b5bd9bddd24aef3c29a4f5f7131b56d
Author: yuanboshe <yuanboshe@yeah.net>
Date:   Mon Oct 6 08:33:29 2014 +0800

    update

commit a07cf83856f969fc991f64f7c530dbe1da3570b2
Author: yuanboshe <yuanboshe@yeah.net>
Date:   Mon Oct 6 08:21:06 2014 +0800

    add laser filter & modify folder name

commit 0c31bd3c5ae3eb0915a3117c3d142df4f37a2e77
Author: yuanboshe <yuanboshe@yeah.net>
Date:   Mon Sep 15 21:31:18 2014 +0800

    add other groups

commit 3b79f1ca0061c18edbcfa24315f9076e0a39539c
Author: yuanboshe <yuanboshe@yeah.net>
Date:   Mon Sep 15 21:24:03 2014 +0800

    good cfg of move_base & group move_base & refine some files

commit 95f8f5e3c8671d04dc6f54839001ffafc037d814
Author: exbot <exbot@vmubuntu.(none)>
Date:   Fri Sep 12 03:19:10 2014 +0800

    add fake amcl

commit beb264a2b5a431a99a9423ff4005a585e669cf24
Author: exbot <exbot@vmubuntu.(none)>
Date:   Tue Sep 9 12:58:23 2014 +0800

    add laser_filters

commit 0e55fc25ee0b76c2888694275db9bf566b4b968b
Author: exbot <exbot@vmubuntu.(none)>
Date:   Mon Sep 8 20:38:15 2014 +0800

    fix lamda327_map issue

commit fb2016a788f63c03e06ad29405c2feb69a1d0fcc
Author: exbot <exbot@vmubuntu.(none)>
Date:   Mon Sep 8 19:42:51 2014 +0800

    init amcl