api: Add script to print path of examples directory.

Partially fixes #92.

zulip/setup.py

@@ -59,6 +59,7 @@ package_info = dict(
     entry_points={
         'console_scripts': [
             'zulip-send=zulip.send:main',
+            'zulip-api-examples=zulip.api_examples:main'
         ],
     },
 )  # type: Dict[str, Any]

zulip/zulip/api_examples.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+import os
+import zulip
+
+def main():
+    zulip_path = os.path.abspath(os.path.dirname(zulip.__file__))
+    examples_path = os.path.abspath(os.path.join(zulip_path, 'examples'))
+    if os.path.isdir(examples_path):
+        print(examples_path)
+    else:
+        raise OSError("Examples cannot be accessed at {}: Directory does not exist!"
+                      .format(examples_path))
+
+if __name__ == '__main__':
+    main()