Resource identifier id doesn't have to be a number

[thnico]

Angular2-jsonapi only supports numbers for resource identifier (id). Ex:

findRecord(type: { new (data: any): JsonApiModel; }, id: number, params?: any, headers?: Headers): Observable<JsonApiModel>;

It's not compatible with Uuid for example.
The JSON API specification doesn't specify that identifiers have to be number.

Therefore, can we allow the identifier to be a string as well ?

[ghidoz]

Thanks! Fixed with v1.2.1