Rewrite JshintCommand entirely

[FichteFoll]

This version does not require to change the currently active build system since it calls the build by itself. Changing the active build system is highly discouraged since this is something the user must change everytime after he uses this command if he uses a "real" build system for this file/project.

I wrote this for a user in IRC which was having the above mentioned issue so I personally didn't test it but according to him it worked (on OSX).

[uipoet]

This is a very interesting change. I would like to decouple the dependency on building, however there would be side-effects such as losing on save building via other plugins. Perhaps with adding the ability to the plugin itself with a configurable option we may have both. Thanks for this!

[FichteFoll]

The main issue here is overriding the default (or selected) build system for your file. As such, if you want to build on save then it should probably be the build system you selected. If you want to automatically run jshint on save, that's no problem because you can select the jshint build then (or hope that it's selected with "Automatic").

Furthermore, you could even listen to "on_post_save" messages and run jshint above that, much like SublimeLinter does, except with a quick panel instead of an output panel. With an option ofc.

[FichteFoll]

push