Package.json version update and default options bug fix

[smasala]

• Rename rm to rimraf for compatibility under windows
• Version number update to remove npm warn: "requires a peer of"
• Remove the unnecessary $.extend of default options which is buggy when using bootstrap extension
  • https://jsfiddle.net/2e41vvje/
  • empty extend is not needed according to: https://datatables.net/examples/basic_init/zero_configuration.html and https://datatables.net/examples/styling/bootstrap.html

[smasala]

Is it possible to get a minor release for this commit please 👍 :)

[l-lin]

Done: https://github.com/l-lin/angular-datatables/releases/tag/v2.1.0

[smasala]

excellent thanks! Can get it via npm now 👍 🥇