Merge pull request #4 from NuriCms/develop

Update point_level_icon.addon.php
Create README.md
modifying PHP author informaiton and Code refineing

NHN -> NURI Project
\r\n(why is it?) -> \n
line ending spaces -> removed.
modifying PHP author and code refineing
Code refineing
.
remodify author info.

write NHN as original author.
Merge pull request #19 from NuriCms/develop

오타 수정.
Merge pull request #20 from NuriCms/master

Master 에서 커밋을 해대서.. 다시 develop으로 가져옵니다.