Disable travis on node 0.7
Disable travis on node 0.7

rike422/operatta-js,pingyuanChen/ot.js,Operational-Transformation/ot.js,kidaa/javascript-operational-transformation,kidaa/javascript-operational-transformation,pingyuanChen/ot.js,pingyuanChen/ot.js,abhishekgahlot/ot.js,abhishekgahlot/ot.js,Operational-Transformation/ot.js,Operational-Transformation/ot.js,abhishekgahlot/ot.js