Add example for documentation

python/mxnet/runtime.py

@@ -19,7 +19,28 @@
 
 # pylint: disable=not-an-iterable
 
-"""runtime querying of compile time features in the native library"""
+"""Runtime querying of compile time features in the native library.
+
+With this module you can check at runtime which libraries and features were compiled in the library.
+
+Example usage:
+
+.. code-block:: python
+
+    import mxnet
+    features=mxnet.runtime.Features()
+
+    features.is_enabled("CUDNN")
+    False
+
+    features.is_enabled("CPU_SSE")
+    True
+
+    print(features)
+    [✖ CUDA, ✖ CUDNN, ✖ NCCL, ✖ CUDA_RTC, ✖ TENSORRT, ✔ CPU_SSE, ✔ CPU_SSE2, ✔ CPU_SSE3, ✔ CPU_SSE4_1, ✔ CPU_SSE4_2, ✖ CPU_SSE4A, ✔ CPU_AVX, ✖ CPU_AVX2, ✔ OPENMP, ✖ SSE, ✔ F16C, ✔ JEMALLOC, ✔ BLAS_OPEN, ✖ BLAS_ATLAS, ✖ BLAS_MKL, ✖ BLAS_APPLE, ✔ LAPACK, ✖ MKLDNN, ✔ OPENCV, ✖ CAFFE, ✖ PROFILER, ✖ DIST_KVSTORE, ✖ CXX14, ✖ INT64_TENSOR_SIZE, ✔ SIGNAL_HANDLER, ✔ DEBUG, ✖ TVM_OP]
+
+
+"""
 
 import ctypes
 import collections