Stubs next version
Upgrades windshaft to 0.28.2
Generates npm-shrinkwrap.json with npm >1.2.0
Merge pull request #220 from CartoDB/upgrade-npm-shrinkwrap

Generates npm-shrinkwrap.json with npm >1.2.0
Release 1.19.0
Merge tag '1.19.0' into cdb

2014-10-14

Announcements:
 - Dropping support for npm <1.2.1
   npm-shrinkwrap.json is incompatible when generated with npm >=1.2.1 and consumed by npm <1.2.1
 - Upgrades windshaft to 0.28.2
 - Generates npm-shrinkwrap.json with npm >1.2.0