習題 2 - 請修改 06-editor/a 範例，加入 《開新檔案、另存新檔》等功能

[ccckmit]

參考： https://github.com/cccnqu/wp106a/tree/master/example/06-editor/a

請寫在： exercise/02/ 裏面！

另存新檔的功能，應該是用 dialog.showSaveDialog，請參考:

http://mylifeforthecode.com/getting-started-with-standard-dialogs-in-electron/

[leocyx]

https://github.com/leocyx/wp106a/tree/master/exercise/02exercise/editor/a

[istar0me]

[Torng]

https://github.com/Torng/wp106a/tree/master/example/06-editor

[keng1230]

https://github.com/keng1230/wp106a/tree/master/example/06-editor/a

[or83664]

110410514 https://github.com/or83664/wp106a/tree/master/exercise/electron/06-editor

[a97021546]

110510534 https://github.com/a97021546/wp106a/tree/master/example/06-editor/a

[icesheep2]

110510538 https://github.com/icesheep2/wp106a/tree/master/example/06-editor/b