Fix typo at install-by-gem.txt
Merge pull request #43 from willnet/patch-1

Fix typo at install-by-gem.txt
in_unix: fixed typo
clarify the meaning of "Apache"
update the ja symlinks for recipe-apache-logs-*
out_s3: recently added options
update input tag examples
adding syslog recipes
more narrative for the config page
change capitalization rules for recipe pages
add HTTP rest api recipe
add the missing image for the syslog recipe
mixpanel fuxors an external link