modify the format of instruction
Merge branch 'master' of github.com:bay6/union
remove category from rank
add gravatar
fix bug sortable
Merge pull request #138 from kaku87/fixbug_sortable

Fixbug sortable
Merge branch 'master' of github.com:bay6/union
refacetor the rank of records
add link to records in rank
Merge pull request #139 from caok/master

modify something in rank and instruction
Update README.md
Update README.md
Update README.md
Create dev_diary
Update dev_diary
Update dev_diary
added event fold for organize event related issue
Update first_online.markdown
Update first_online.markdown
Update first_online.markdown