Travis CI: use node.js v0.12
Travis CI: use node.js v0.12

2947721120/ubiquitous-octo-kumquat,freezy-sk/bootlint,techkrish/bootlint,cnbin/bootlint,evilemon/bootlint,kkirsche/bootlint,freezy-sk/bootlint,fellipecouto96/bootlint,fellipecouto96/bootlint,chrismbarr/bootlint,evilemon/bootlint,iamphill/bootlint,cnbin/bootlint,freezy-sk/bootlint,evilemon/bootlint,cnbin/bootlint,chrismbarr/bootlint,zacechola/bootlint,2947721120/ubiquitous-octo-kumquat,iamphill/bootlint,twbs/bootlint,zacechola/bootlint,zacechola/bootlint,chrismbarr/bootlint,techkrish/bootlint,fellipecouto96/bootlint,2947721120/ubiquitous-octo-kumquat,kkirsche/bootlint,techkrish/bootlint,iamphill/bootlint,twbs/bootlint,kkirsche/bootlint