Support cordova-lib
Fix last vestage of -ll
webworks: set cordovaLib.binname

This lets us get happy errors like:
    No plugins added. Use `webworks plugin add <plugin>`.

instead of:
    No plugins added. Use `cordova plugin add <plugin>`.
create: report nested error...
Add clearer explanation for using --buildId

Fixing usage verbage for --debug and --release
use exit library for process.exit

On Windows, if you have pending bits in pipes and you exit, they
generally do not get delivered.

To avoid this, you need to change process.exit() to something
which actually ensures that buffers are flushed before it exits,
this is handled by the 'exit' module/function.