npm WARN angular2@2.0.0-beta.7 requires a peer of es6-promise@^3.0.2 but none was installed.
npm WARN angular2@2.0.0-beta.7 requires a peer of es6-shim@^0.33.3 but none was installed.
npm WARN angular2@2.0.0-beta.7 requires a peer of reflect-metadata@0.1.2 but none was installed.
npm WARN angular2@2.0.0-beta.7 requires a peer of rxjs@5.0.0-beta.2 but none was installed.
npm WARN angular2@2.0.0-beta.7 requires a peer of zone.js@0.5.15 but none was installed.