Bump NPM version to 0.1.0 in preparation for publishing.

The minor version bump is necessary because the command-line interface for
specifying entry points has changed:

  1. <module ID> means include the module along with any dependencies but
     do not eagerly evaluate it.

  2. <module ID>:<global name> means include the module along with any
     dependencies, eagerly evaluate it, and expose its exports object as a
     global variable named <global name>.

  3. <module ID>: means include the module along with any dependencies and
     eagerly evaluate it, but do not expose it globally.