Added example usage n some functions in config.py

tensorflow/python/platform/sysconfig.py

diff --git a/tensorflow/python/platform/sysconfig.py b/tensorflow/python/platform/sysconfig.py
index 9eebac9..474f043 100644
--- a/tensorflow/python/platform/sysconfig.py
+++ b/tensorflow/python/platform/sysconfig.py
@@ -33,6 +33,8 @@
 @tf_export('sysconfig.get_include')
 def get_include():
   """Get the directory containing the TensorFlow C++ header files.
+  
+  >>> print(tf.sysconfig.get_include())
 
   Returns:
     The directory as string.
@@ -48,6 +50,8 @@
 @tf_export('sysconfig.get_lib')
 def get_lib():
   """Get the directory containing the TensorFlow framework library.
+  
+  >>> print(tf.sysconfig.get_lib())
 
   Returns:
     The directory as string.
@@ -137,6 +141,8 @@
 
   Note that the actual keys and values returned by this function is subject to
   change across different versions of TensorFlow or across platforms.
+  
+  >>> print(tf.sysconfig.get_build_info())
 
   Returns:
     A Dictionary describing TensorFlow's build environment.