add install.sh.
Merge pull request #5 from hansode/installer

add install.sh.
add vip-less vipple.
add an instruction for vipple-zero.
Merge pull request #6 from hansode/feature-vipple-zero

Feature vipple zero
add vipple-zero to installation target.
Merge pull request #7 from hansode/installer

add vipple-zero to installation target.
fix setup_service argument.
Merge pull request #8 from hansode/installer

fix setup_service argument.
remove unnecessary code.
Merge pull request #9 from hansode/cleanup

remove unnecessary code.
move making /etc/vipple to main.
Merge pull request #10 from hansode/installer

move making /etc/vipple to main.
use service command instead of SysV init script.
add config params.
Merge pull request #11 from hansode/docs

Docs
Merge pull request #1 from hansode/master

Feature: vipple-zero