fix entry_points so that ntunnel is installed as an executable...

README.md

@@ -10,6 +10,9 @@ TCP sockets.
 Example
 -------
 
+Note: If you have installed the package, there is also the program
+`ntunnel` that can be used instead of `python -m ntunnel`.
+
 Generate the keys:
 ```
 python -m ntunnel genkey serverkey

setup.py

@@ -29,9 +29,9 @@ setup(name='ntunnel',
     extras_require = {
         'dev': [ 'coverage' ],
     },
-    entry_poitns={
-        'console_scripts': {
-            'ntunnel': 'ntunnel:main',
-        }
+    entry_points={
+        'console_scripts': [
+            'ntunnel = ntunnel.__main__:main',
+        ]
     }
 )