Merge pull request #69 from ksk-uchi/GG-2584-document-update

Gg 2584 document update
Merge pull request #71 from ksk-uchi/GG-2584-document-update

GG-2584 modify dead link
GG-2584 delete explain of "allow_fork" option
Merge branch 'master' into GG-2584-document-update