利用webstrom的宏，保存文件自动格式化代码

这个git的截图大家是不是很熟悉，一个项目多人协作。有人提交前，格式化了代码，有人没有，进仓库的时候，各种合并！真正修改的几行，散落在这些无用的代码中，不方便快速定位！

如果大家都用同样的IDE，IDE在保存文件的时候，能自动格式化，就能最大限度的规避这种问题！

很幸运，webstorm正好有这个功能！

PS: go的fmt已经在语言级别实现保存自动格式代码了！不需要在ide设置宏!

参考资料：http://stackoverflow.com/questions/21217791/how-to-auto-format-code-in-webstorm

Record the macro

1. Edit > Macros > Start Macro recording
2. Press Ctrl+Alt+L, and then Ctrl+Alt+S
3. Stop recording the macro clicking on the Stop button on the bottom right of the page.
4. Give this macro a name like "Format and Save"

Assing Ctrl+S to "Format and Save"

1. open WebStorm->Preferences;
2. search for "keymap" and open it;
3. search "Format and Save" and double click the action "Format and Save";
4. select "Add Keyboard Shortcut";
5. select "Cmd+S" as first stroke.
6. it will report conflicts. Ignore it and click OK button
7. WebStorm will show a warning "The shortcut is already assigned to other actions. Do you want to remove other assignments?" Click "Remove" button

That's it.