Fixed crash with react-native@0.45.1 on Android

[iyegoroff]

It looks like because of some strict type checks on Java side code:
this.xhr.withCredentials = 'true';
leads to error:
TypeError: expected dynamic type 'boolean', but had type 'string'.

When I changed 'true' to true the error has gone.

[brycekahle]

Thanks!

[Dofff]

@iyegoroff i'that fixed.... but same issue.. what`s the problem?

[asgvard]

Probably because it's fixed in source folder, but not in dist minified version.
@brycekahle could we expect new build and npm version soon? It's quite important fix for RN users. Thanks!