ale utils.checkLocalXtc exit the program if xtc can't be found
Add utils.checkLocalXtc to commands that depend on xtc
New option: xtc start --port [number]
Refactor build command
Add (short) options to command description for now

Until we can make `xtc help command` work.
Not specifying a working path for yo anymore.

It should always be the folder containing the project's package.json and more importantly node_modules with the symlinked generator-xtc.
Mention that `install` uses generator-xtc for project setup. And that most commands are interactive.
Refactor all async execution to use promises.
Workaround for missing `program help command` functionality.
Display help if no args are entered
Wording
Dependencies: Use tilde versioning for all modules without a 1.0 release
Comment better
Print stack and die for errors in spawned npm runs. More robust `trace` helper.
Windows compatibility through use of a newly created library called superspawn
prettify .gitignore
Update docs
Re-order commands because that is reflected in the help output
0.1.0