v2.1.10 - Eslint 2 support and watcher options

Fixes

• Eslint v2.x.x now can be installed with eslint-watch ( #77 )
• Watcher now passes most options that CLIEngine allows for linting ( #72 )
  • config
  • eslintrc
  • extensions
  • parser
  • cache
  • cacheLocation
  • ignore
  • ignorePath
  • ignorePattern
  • fix