open dialog to create new file for controller,model,helper,spec and partial file
beep when target file is undefined
update document
Merge pull request #61 from hmatsuda/create-new-file

Open dialog if related file is not exist
Prepare 0.8.0 release
Merge branch 'master' into support-windows-ci
update migration finder
update open-view
fix view dialog
fix open-controller
fix open-model