add examples to flake8 build

examples/token_auth.py

@@ -8,12 +8,12 @@
 To gain access, you can use a command line HTTP client such as curl, passing
 one of the tokens:
 
-    curl -X GET -H "Authorization: Bearer <insert-jwt-token-here>" http://localhost:5000/
+    curl -X GET -H "Authorization: Bearer <jwt-token>" http://localhost:5000/
 
 The response should include the username, which is obtained from the JWT token.
 """
 from flask import Flask, g
-from flask_httpauth import HTTPBasicAuth, HTTPTokenAuth, MultiAuth
+from flask_httpauth import HTTPTokenAuth
 from itsdangerous import TimedJSONWebSignatureSerializer as JWT
 
 
@@ -24,10 +24,6 @@
 auth = HTTPTokenAuth('Bearer')
 
 
-def get_jwt(username, expires_in=3600):
-    return jwt.dumps({'username': username})
-
-
 users = ['john', 'susan']
 for user in users:
     token = jwt.dumps({'username': user})

tox.ini

@@ -13,7 +13,7 @@ basepython=python
 deps=
     flake8
 commands=
-    flake8 --exclude=".*" --ignore=E402 flask_httpauth.py tests
+    flake8 --exclude=".*" --ignore=E402 flask_httpauth.py tests examples
 
 [testenv:py26]
 basepython=python2.6