cara membuat load more seperti instagram

gimana ya caranya membuat foto diawalan tampil hanya 6 , lalu dibawahnya ada tulisan Lihat Lainnya, lalu ketika di tekan tampil terus menerus ketika di scrooling??

ane berhasil buat, tapi untuk diawal ane limit 6, seperti ini scriptnya

<div id="grid-container" class="cbp">
                    <?php
                    $queryProject = mysqli_query($link, "SELECT * FROM galeri LIMIT 0,6") or die(mysqli_error());
                    while($dataProject = mysqli_fetch_array($queryProject)){
                    ?>
                        <div class="cbp-item <?php echo str_replace(' ','-',$dataProject['nama_galeri']); ?>">
                            <div class="cbp-caption">
                                <div class="cbp-caption-defaultWrap">
                                    <img src="img/portfolio/<?php echo $dataProject['gambar_galeri']?>" alt=""  class="img-responsive">
                                </div>
                                <div class="cbp-caption-activeWrap">
                                    <div class="cbp-l-caption-alignCenter">
                                        <div class="cbp-l-caption-body">
                                            <a href="img/portfolio/<?php echo $dataProject['gambar_galeri']?>" class="cbp-lightbox cbp-l-caption-buttonRight" data-title="<?php echo $dataProject['keterangan_galeri'] ?><br>by Author" >view larger</a>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div><?php } ?>
                    </div>

                    <div id="loadMore-container" class="cbp-l-loadMore-button">
                        <a href="loadmore.php" class="cbp-l-loadMore-link">
                            <span class="cbp-l-loadMore-defaultText">Lihat Lainnya</span>
                            <span class="cbp-l-loadMore-loadingText">LOADING...</span>
                            <span class="cbp-l-loadMore-noMoreLoading">NO MORE WORKS</span>
                        </a>
                    </div>

dan ini di loadmore.php

<div class="cbp-loadMore-block1">

    <?php
    $link = mysqli_connect("localhost", "root", "", "database");

    /* cek koneksi ke database */
    if (mysqli_connect_errno()) {
        printf("Gagal Terhubung: %s\n", mysqli_connect_error());
        exit();
    }
    $queryProject = mysqli_query($link, "SELECT * FROM galeri LIMIT 6,15") or die(mysqli_error());
    while($dataProject = mysqli_fetch_array($queryProject)){
    ?>
        <div class="cbp-item <?php echo str_replace(' ','-',$dataProject['nama_galeri']); ?>">
            <div class="cbp-caption">
                <div class="cbp-caption-defaultWrap">
                    <img src="img/portfolio/<?php echo $dataProject['gambar_galeri']?>" alt=""  class="img-responsive">
                </div>
                <div class="cbp-caption-activeWrap">
                    <div class="cbp-l-caption-alignCenter">
                        <div class="cbp-l-caption-body">
                            <a href="img/portfolio/<?php echo $dataProject['gambar_galeri']?>" class="cbp-lightbox cbp-l-caption-buttonRight" data-title="<?php echo $dataProject['keterangan_galeri'] ?><br>by Author" >view larger</a>
                        </div>
                    </div>
                </div>
            </div>
        </div><?php } ?>
</div>

agar otomatis tampil tanpa limit seprti diatas gimana ya caranya??? diawal 6 gambar lalu ketika "Lihat Lainnya" di tekan tampil otomatis gimana yaa??