fix markdown display problem

Fix a bug of lambda_rank's inference.

Supply param cutoff_top_n in several scripts of DS2

Website deploy scripts

Refine codes and doc of DSSM.

commit 0862f2ae1124477b1dd0d1a17cf572f2f70ced6b
Author: daming-lu <daminglu@yahoo.com>
Date:   Tue Oct 31 11:53:54 2017 -0700

    use IP as known_host

commit b22ee03bc928ce2d7f36afb4e396f03f353db5ac
Author: daming-lu <daminglu@yahoo.com>
Date:   Thu Oct 26 14:20:31 2017 -0700

    add PR check

commit 47584bf532a1d6cf4f4276f3df6c1692926f72a5
Author: daming-lu <daminglu@yahoo.com>
Date:   Thu Oct 26 09:11:39 2017 -0700

    remove js and css

commit 48cde38e1b1c7651fa47d3d0de82a71a498fb0f1
Author: daming-lu <daminglu@yahoo.com>
Date:   Wed Oct 25 17:13:01 2017 -0700

    remove old pem

commit 38989a58ed93c2b2cf276f3a9b5dc68f0f147a6c
Merge: f275a2a 060b949e
Author: daming-lu <daminglu@yahoo.com>
Date:   Wed Oct 25 16:59:32 2017 -0700

    Merge remote-tracking branch 'upstream/develop' into develop

commit f275a2aae11e5bf527fbaf3d6205c2a25056106c
Author: daming-lu <daminglu@yahoo.com>
Date:   Wed Oct 25 16:10:26 2017 -0700

    updated to one-line deployment

commit e20b9732bf1947dfc1701a14e8597d2966cd63f3
Merge: 1beb1d6 5c612b3
Author: daminglu <daming-lu@users.noreply.github.com>
Date:   Fri Oct 20 16:42:19 2017 -0700

    Merge pull request #2 from bobateadev/clean_up_deploy_sh_to_curl_PPO

    curl PPO and do the strip and deployment

commit 5c612b3e12853d447e44c5a969a7a9eca2726593
Author: daming-lu <daminglu@yahoo.com>
Date:   Fri Oct 20 16:35:00 2017 -0700

    curl PPO and do the strip and deployment

commit 1beb1d6e76784e3b44e5940f3df3ff4d9e19f462
Author: ludaming <ludaming@baidu.com>
Date:   Wed Oct 18 17:34:37 2017 -0700

    rsync to both /var/content/ and /var/content_staging/

commit 326ec04976f7b22a58c1a46325c49e25885333fe
Author: ludaming <ludaming@baidu.com>
Date:   Mon Oct 16 14:52:45 2017 -0700

    Use 'master' branch in 'PaddlePaddle.org' as target branch

commit 952beaed7983105c7f0d90849fb15a272082b501
Author: ludaming <ludaming@baidu.com>
Date:   Thu Oct 12 20:43:30 2017 -0700

    add deploy

commit 64a30f2bb89a0dda2373f5968f22829d3fb36b57
Author: ludaming <ludaming@baidu.com>
Date:   Mon Sep 18 17:46:40 2017 -0700

    add known host

commit c3722ebe96f462e4b148d18c753ad44aaf8682c3
Author: ludaming <ludaming@baidu.com>
Date:   Mon Sep 18 17:32:11 2017 -0700

    change deploy.sh to 755, same as others

commit 8a7d05227d1cfe03dcd97a390b2711e427793359
Author: ludaming <ludaming@baidu.com>
Date:   Mon Sep 18 17:24:50 2017 -0700

    add travis deployment

Fix a bug of DSSM that parameters are not correctly shared.

Add the scene text recognition example.

Add pre-trained models

Add a neural sequence tagging model for QA。

Fix bugs of generate_sequence_by_rnn_lm

Update README.md of LTR.

Fix model saving bugs.

fix the bug that parameters are note transposed.

Refine readme for nested sequences.