Use original swagger file instead of embed it in a go file

[thoriqsatriya]

Don't you think it's better if the swagger files are the original swagger files, instead of embedded into go files? And I think it's better if we can specify where to look the swagger file (specify the swagger-file directory path in the project).

The reason is sometimes we need to modify some of swagger files, for example theme color, icon and title. What do you think?

And also, what's the license of this repo?

Thank you