fielding crud
association player & fielding
create fieldings in seed
rename column_name errors -> fielding_errors
fix column name posision -> position
fix fieldings#index
create fieldings in seed
fix migration files
playes has_many fieldings
rename erb -> haml
each link
appply bootstrap
i18n batting
i18n
apply i18n to application.html.haml
term method
use japanese
wip
wip
wip