Add a test nodejs file that starts defining the API.
Add a test nodejs file that starts defining the API.

szymonkaliski/node-midi,brandly/node-midi,brandly/node-midi,Cycling74/node-midi,brandly/node-midi,julianduque/node-midi,julianduque/node-midi,szymonkaliski/node-midi,drewish/node-midi,szymonkaliski/node-midi,julianduque/node-midi,brandly/node-midi,drewish/node-midi,justinlatimer/node-midi,szymonkaliski/node-midi,drewish/node-midi,julianduque/node-midi,szymonkaliski/node-midi,brandly/node-midi,drewish/node-midi,Cycling74/node-midi,Cycling74/node-midi,justinlatimer/node-midi,drewish/node-midi,Cycling74/node-midi,justinlatimer/node-midi,Cycling74/node-midi,julianduque/node-midi,Cycling74/node-midi