app.js

<div>
                {this.state.postData}
                <ReactPaginate
                    previousLabel={"prev"}
                    nextLabel={"next"}
                    breakLabel={"..."}
                    breakClassName={"break-me"}
                    pageCount={this.state.pageCount}
                    marginPagesDisplayed={2}
                    pageRangeDisplayed={5}
                    onPageChange={this.handlePageClick}
                    containerClassName={"pagination"}
                    subContainerClassName={"pages pagination"}
                    activeClassName={"active"}/>
            </div>