modify format
add daemon.js as the main file
fix bug: remove return for debugging
fix bug: wrong to pass env to child process
fix bug: default limit to is only me
fix bug: call wrong function to get hours
clear plurks.json cache after checkPlurks
fix bug: limitTo initialize
add example of plurks.json
Merge pull request #4 from headhsu2568/dev

version 1.0