message: Bump 2.0.0-alpha10-rc2
diff: {
  "name": "sigma",
  - "version": "2.0.0-alpha10-rc1",
  + "version": "2.0.0-alpha10-rc2",
  "description": "A JavaScript library dedicated to graph drawing.",
  "homepage": "http://sigmajs.org",
  "bugs": "http://github.com/jacomyal/sigma.js/issues",
  