Cleanup apache sample config of Sliceable Switch

- Accept REST paths conforming to Sliceable Network Management API
  (e.g., /tenants/tenant-1/networks/network-1)
- Make the script dir "deny from all" to avoid unnecessary expose.
- Replace tab to spaces
Accept a dict style of filter definition

Sliceable Switch REST API does not have a consistent API object model.
A network and a port are passed one by one. On the other hand a definition
of packet filter must be passed as a list.
It would be better that REST API accepts both a dict and a list.

This commit allows a user to post a dict style of packet filter definition
in addition to a list style.

A list support for network/port will be done in a later patch.
Fix issue #17
print table stats in show-switch-features.rb

This commit changes ShowSwitchFeatures class to send messages from
switch_ready() method only and extends stats_reply() method to print
TableStatsReply objects as well.
Merge pull request #23 from infrastation/master

improvement to show-switch-features.rb, 2nd try
Merge pull request #18 from amotoki/ss-apache-conf

Cleanup apache sample config of Sliceable Switch
Modify routing_switch configurations to current-directory independent.
Modify sliceable_switch configurations to current-directory independent.
Fix #19
Update README of flow_dumper
Rename README to README.md
Update README.md of flow_dumper
Update README of show_description
Fix bug
Update README of flow_manager
Correct a mistake
Update READMEs
Refactor configuration files.
Refactor configuration files
Fix mistakes in load_balance_switch/switch.conf