Bump to Nan 2.3.5
Bump to Nan 2.3.5

This eliminates the warning

    v8::ObjectTemplate::Set() with non-primitive values is deprecated

in NodeJS 6 when running node-spotify.

FrontierPsychiatrist/node-spotify,FrontierPsychiatrist/node-spotify,FrontierPsychiatrist/node-spotify,FrontierPsychiatrist/node-spotify