Change to fetch everytime
fix to clone private repository
add ssh_config to clone private repository
remove unused statement
Merge pull request #74 from mookjp/clone-private-repository

add feature to clone a private repository
Merge pull request #79 from mookjp/change-to-fetch-everytime

Change to fetch everytime
Set wercker icon to show only status pf master
delegate git clone function of hook.rb to builder server