Adding support for NODE_PATH

Now, the environment variable NODE_PATH is read, and the paths provided there are used in first place to look for modules.

1.1.4

• The main field in package.json is now being resolved correctly (allowing you to specify "main": "lib" and have it resolve to ./lib/index.js).

1.1.3

• Empty browser field ("browser": {}) in package.json no longer breaks the build.
• The dependency microseconds has been updated to 0.1.0, which fixes #12.

1.1.2

• Invalid routes in the browser field in package.json don't make the build error out anymore.

1.1.1

• Requiring JSON files now works as expected. There was a bug which caused the following to not work (accessing things from the evaluated result, like methods from Array or Object):

var joinedNames = require('./names.json').join('|');

1.1.0

• Add new option: warnings (boolean). Enables warning messages. Defaults to true.
• Friendlier output of compile time (1 second 861 milliseconds 474 microseconds).
• Two bug fixes for path resolving.

1.0.1

• Fix issue with resolving paths on Windows.

1.0.0

First public release!