Add news topics for 1.0.6
Add config template file
Load other information from the static config file
Merge pull request #18 from long-long-float/add-config-template

Add config template file
Use "daemon" configuration in the static config file
Add more configurations for the command test config file
Align
Add sample config file
Remove "yaml" from dependencies list.

It is one of standard libraries.
Sort dependencies alphabetically
Add a utility command `droonga-engine-stop` to kill the server
Add news topics
Output message to notify sending SIGTERM
Add path to serf event handler errors
Remove obsolete method
Rescue from any error from SerfEventHandler
Create directory before output files