Ensure that libblkid-devel is installed on CentOS
[site] Add tables API page
adding a few more valid urls to the routes
Merge pull request #364 from justintime32/centos_libblkid_devel

Ensure that libblkid-devel is installed on CentOS
[site] Added pages for static build
Merge pull request #366 from facebook/site_tables

[site] Add tables API page
site instructions [skip ci]
Add euid / egid to process table

 (not tested on darwin)
Merge pull request #372 from LTD-Beget/processes_euid_egid

Add uids and gids to process table
Socket_inode and port_inode tables to map PIDs->ports via netlink inet_diag
Example query:
```
SELECT port.local_port,
       port.remote_port,
       port.local_ip,
       port.remote_ip,
       socket.pid,
       process.name,
       process.cmdline
       process.path
       FROM socket_inode AS socket
       JOIN port_inode AS port
       ON socket.inode = port.inode
       INNER JOIN processes AS process
       ON socket.pid = process.pid;
```
Updated
free(linkname) and no more 'self'
linux-headers-generic