Clean code
example: Remove ugly tests
Fix createDir

Now handles creating already-existing directories.

This can happen in asynchronous mode.
Returns (and show) generation errors

The gulp command displays them and other tools
are now able to know if the generation as been
successful of if there were errors.
Merge branch 'return-errors' into next

* return-errors:
  Returns (and show) generation errors
  Fix createDir
  example: Remove ugly tests
  Clean code
Fix: Handle param _readableState added by NodeJS

Should help (fix?) with issue #2
Fix: Handle param _readableState added by NodeJS

Should help (fix?) with issue #2
package.json now fixes modules’ version
package.json now fixes modules’ version

(cherry picked from commit d77880a6ce78513e9f54c02a96182448b31e5d6f)
Added convenience default clean task
Merge pull request #3 from robinvanb/cleantask

Added convenience default clean task
Add default 'clean' task in main gulpfile.js
Add missing infos in CHANGELOG
Merge branch 'next'

* next:
  Add missing infos in CHANGELOG
  Add default 'clean' task in main gulpfile.js
  Added convenience default clean task
  package.json now fixes modules’ version
  Fix: Handle param _readableState added by NodeJS
  Returns (and show) generation errors
  Fix createDir
  example: Remove ugly tests
  Clean code
  Add helper `require` to import JS files in templates
  Remove cleanEnv ⇒ no need to global anymore
  Simplify cleanEnv
  example: Add example ‘stylus’
  gulp: Add defineTasks()
  gulp: init() now returns the config object
  example: Move example into example/vanilla

Conflicts:
	package.json
Bump to 0.0.6
cli: Default src/dst dirs are now global paths

Relative paths were resolved against the gulpfile.js's directory.
readme: Fix example path
Display infos logs only in debug mode
Rename `url_to` into `pathTo`

This helper returns a path (`/xxx`), not an URL (`http://foo.com/xxx`).

The `url_to` helper still works but displays a warning.

The new syntax uses camelCase to allow the introduction of a real
`urlTo` helper (which returns an URL).
Add `pathToHere` helper