update doc for initializer
update doc for initializer

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