Updated ignore rules for git and npm

- The example build directly is now ignored.

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Updated npm package.json file

- Added keywords, main directory, organized dependencies and added
  scripts and test dependencies

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Updated directory structure

- bin - contains the build script that gets executed prior to packing or
  publishing
- lib - contains the plugin
- test - contains mocha tests

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Added git ignore rule to ignore all build directories

Signed-off-by: Byron Sanchez <byron@hackbytes.com>