[bug fix] fix hang problem while doing export without callback in end function
[refactor] refactor the export, about the import callback
[test] refactor migration export, to make it more consistent
[other] add *.swp to .gitignore
[refactor] refactor migrate lib to remove duplicate code
[bug fix] improper exit in child process of migration
Merge branch 'master' of git://github.com/dreamerslab/coke
[refactor] refactor migration and load whole environment while do migration
Merge pull request #29 from rayshih/master

Refactor migration and load whole env while do migration