util: docstring of _sig_checker (#305)
util: docstring of _sig_checker (#305)


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