Update README.md
Rewrite the structure
[deploy] Add Components Overview and Deploying with SQLite
Merge pull request #1 from Chilledheart/develop

[deploy] Add Components Overview and Deploying with SQLite
[deploy] fix using mysql document
add deploy_Seafile_behind_NAT.md
add deploy_Seahub_at_Non-root_domain.md
[deploy] add start_Seafile_at_system_bootup.md
[deploy] Add using logrotate
Merge pull request #2 from Chilledheart/develop

[deploy] fix using mysql document
Merge pull request #3 from Chilledheart/using_logrotate

[deploy] Add using logrotate
[deploy] add add_memcached.md
Add pictures in component overview
Update README
Modify README of deploying
Update components overview and deploy/README
[deploy] add https_with_apache and https_with_nginx
Merge pull request #4 from Chilledheart/develop

[deploy] add https_with_apache and https_with_nginx
Update using_logrotate.md
Update using_logrotate.md