Add arbitrary reporter support to js api

[tj]

currently just takes the name

[Bartvds]

+1

note: it's easy to hook into the pass/fail event's from the js api's mocha.run() object and make your own reporter functionality but it seems i can't completely silence/null the stdout reporter: i keep getting some failed reports in red. it seems it's the Base.epilogue (related to #138 maybe?)

i use this in a jake task

mocha = new Mocha({
    reporter: false
    ui: "bdd"
  })

[nherment]

+1

[tj]

note that now you can also do --reporter name where "name" is simply a module, so it can be local as in ./name or an npm installed module

[nherment]

oh ok. good to know then. I guess the API of the module should be the exact same as the one the reporters implement ?

[tj]

i have an example in the wiki

[Bartvds]

nice, refactors/modularizes nicely from my js-api event workaround. thanks :)