add examples for slicing option (#11918)
add examples for slicing option (#11918)


mbaijal/incubator-mxnet,mbaijal/incubator-mxnet,sxjscience/mxnet,ForkedReposBak/mxnet,yajiedesign/mxnet,yajiedesign/mxnet,leezu/mxnet,szha/mxnet,reminisce/mxnet,mbaijal/incubator-mxnet,szha/mxnet,szha/mxnet,eric-haibin-lin/mxnet,tlby/mxnet,eric-haibin-lin/mxnet,ForkedReposBak/mxnet,tlby/mxnet,dmlc/mxnet,tlby/mxnet,apache/incubator-mxnet,tlby/mxnet,zhreshold/mxnet,ptrendx/mxnet,zhreshold/mxnet,zhreshold/mxnet,eric-haibin-lin/mxnet,sxjscience/mxnet,reminisce/mxnet,dmlc/mxnet,dmlc/mxnet,mbaijal/incubator-mxnet,ptrendx/mxnet,reminisce/mxnet,zhreshold/mxnet,yajiedesign/mxnet,szha/mxnet,ptrendx/mxnet,leezu/mxnet,ForkedReposBak/mxnet,DickJC123/mxnet,eric-haibin-lin/mxnet,szha/mxnet,ForkedReposBak/mxnet,DickJC123/mxnet,sxjscience/mxnet,ptrendx/mxnet,larroy/mxnet,leezu/mxnet,reminisce/mxnet,eric-haibin-lin/mxnet,zhreshold/mxnet,sxjscience/mxnet,szha/mxnet,sxjscience/mxnet,mbaijal/incubator-mxnet,zhreshold/mxnet,ptrendx/mxnet,leezu/mxnet,larroy/mxnet,leezu/mxnet,eric-haibin-lin/mxnet,sxjscience/mxnet,eric-haibin-lin/mxnet,ForkedReposBak/mxnet,yajiedesign/mxnet,larroy/mxnet,dmlc/mxnet,yajiedesign/mxnet,yajiedesign/mxnet,sxjscience/mxnet,larroy/mxnet,eric-haibin-lin/mxnet,leezu/mxnet,reminisce/mxnet,leezu/mxnet,tlby/mxnet,dmlc/mxnet,yajiedesign/mxnet,sxjscience/mxnet,larroy/mxnet,larroy/mxnet,apache/incubator-mxnet,tlby/mxnet,reminisce/mxnet,tlby/mxnet,zhreshold/mxnet,ptrendx/mxnet,ForkedReposBak/mxnet,ptrendx/mxnet,ForkedReposBak/mxnet,reminisce/mxnet,mbaijal/incubator-mxnet,reminisce/mxnet,zhreshold/mxnet,zhreshold/mxnet,ptrendx/mxnet,ForkedReposBak/mxnet,tlby/mxnet,dmlc/mxnet,reminisce/mxnet,mbaijal/incubator-mxnet,yajiedesign/mxnet,leezu/mxnet,ptrendx/mxnet,dmlc/mxnet,dmlc/mxnet,reminisce/mxnet,DickJC123/mxnet,ForkedReposBak/mxnet,dmlc/mxnet,szha/mxnet,larroy/mxnet,apache/incubator-mxnet,szha/mxnet,eric-haibin-lin/mxnet,tlby/mxnet,apache/incubator-mxnet,tlby/mxnet,yajiedesign/mxnet,leezu/mxnet,sxjscience/mxnet,ptrendx/mxnet,szha/mxnet,larroy/mxnet,larroy/mxnet,mbaijal/incubator-mxnet,DickJC123/mxnet,mbaijal/incubator-mxnet