Build assets automatically

[jbrooksuk]

[Ionys320]

I also strongly suggest to add the build folder to .gitignore after deleting the files. I think there is no need to keep a track on builded files.

[jbrooksuk]

@Ionys320 I might be dumb here, but won't adding the build directory to .gitignore prevent us from being able to commit them automatically?

[Ionys320]

@jbrooksuk When a file/folder is tracked by git (by being commited), adding it to .gitignore doesn't ignore it until the file is removed from the system (by deleting it and commit the deletion). After this only, creating the folder/file will not track it anymore!

[jbrooksuk]

@Ionys320 but we do want to ship Cachet with the compiled assets.