add recconect_rails
fix method end
delete: require "rails"
comment out reconnect process
comment out reconnect_rails
uncomment && add const check
instance method -> class method
add 2.0.0 to rails support version
add mysql2 to isolate libs
revert: add 2.0.0 to rails support version
revert: add mysql2 to isolate libs
remove: rails_reconnect.rb
add clean_reconnect_txt
revert: add clean_reconnect_txt
remove empty line
add after_usr1 hook
fix typo
fix hadler arg num
Merge pull request #1 from winebarrel/master

add reconnect db by USR1 signal