fix(build): fix #29 on windows
fix(build): fix #29 on windows

Issue with npm script flow.compile:system on windows

#29

Riron/ng2-formly,ngx-formly/ngx-formly,formly-js/ng2-formly,ngx-formly/ngx-formly,formly-js/ng-formly,formly-js/ng2-formly,formly-js/ng-formly,Riron/ng2-formly,formly-js/ng2-formly,ngx-formly/ngx-formly,Riron/ng2-formly,ngx-formly/ngx-formly