added a pull request template
added a pull request template

papicella/snappy-store,papicella/snappy-store,papicella/snappy-store,papicella/snappy-store,papicella/snappy-store,papicella/snappy-store,papicella/snappy-store,papicella/snappy-store,papicella/snappy-store,papicella/snappy-store,papicella/snappy-store