ENYO-3090: Allow to remove a source with "type" set to "null"

Enyo-DCO-1.1-Signed-off-by: Yves Del Medico <yves.del-medico@hp.com>
Merge pull request #9 from enyojs/ENYO-3090

ENYO-3090: Allow to remove a source with "type" set to "null"
Merge branch 'master' of github.com:enyojs/ares-generator into ENYO-2935

# By Yves Del-Medico
# Via Yves Del-Medico (1) and yves-del-medico (1)
* 'master' of github.com:enyojs/ares-generator:
  ENYO-3090: Allow to remove a source with "type" set to "null"

Conflicts:
	ares-generator.js