Remove Node 0.12 from Travis
Remove Node 0.12 from Travis

Node v0.12 was EOL'ed 2016-10-31 (https://github.com/nodejs/LTS)

trentmwillis/ember-scatter,trentmwillis/ember-exam,trentmwillis/ember-exam,trentmwillis/ember-exam,trentmwillis/ember-scatter