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
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