Lock babylon at 6.8.0
Lock babylon at 6.8.0

I kept getting an error in Travis from eslint:

  import-js/lib/findJsModulesFor.js
  0:0  error  Parsing error: Object.defineProperty called on non-object

Initially, I wasn't getting this error locally. But after wiping
node_modules and reinstalling, I saw it there too. After some googling,
I came across this recent babel-eslint issue:

  https://github.com/babel/babel-eslint/issues/321

In that thread, people suggest pinning babylon at 6.8.0 (a regression
was introduced in 6.8.1). Doing that seems to do the trick.

trotzig/import-js,trotzig/import-js,trotzig/import-js,Galooshi/import-js