Feature : Add new docs.
Feature : Add more text.
Rename folder.
Add new markdown files.
Delete trial h2 titles.
Merge pull request #13 from hughlv/feature/fix_1

Feature/fix 1
Add api/rs/batch.markdown.
Add api/reference/security/access-token.markdown.
Merge pull request #14 from BluntBlade/feature/newdocs

Feature/newdocs
Add api/referece/security/download-token.markdown.
Add api/up/bput.markdown.
Add api/up/mkfile.markdown.
Merge pull request #15 from BluntBlade/feature/newdocs

Feature/newdocs
Fix
fix
Check all external links and format tables.
Check all external links and format tables.
Check all external links and format tables.
Check all external links and format tables.
Merge branch 'feature/newdocs' of github.com:BluntBlade/docs.qiniu.com into feature/newdocs