Add explanations for the new log_level config option
typo...
Fix log_level doc
fixing a few typos
Merge pull request #85 from yoshi-taka/fix-typo

fixing a few typos
add Resources link
edit "_log_level_params.txt" for clarity.
add RasPi article draft, not in public yet.
edit community.txt to be more engaging & inviting.
_log_level_params: link to better article

for details on global logging (old system)
remove the top-level data sheet link

now it is under Resources
Add 'Operations' category to separate configuration and some oeperation tips
edit filter-modify-apache.txt for clarity
Merge pull request #87 from fluent/add-operations-category

Add 'Operations' category to separate configuration and some oeperation tips
Update toc.ja.rb as well. issue #87
Add logging article and update related pages
Merge pull request #88 from fluent/add-logging

Add logging article and update related pages
menu re-organization
publish raspberrypi article
operations -> deployment