Fix favicon (fixes #1)

* Include milla.ico in package_data in setup.py
* Use pkg_resources API to load icon instead of milla.__file__
* Allow caller to specify icon content type

setup.py

@@ -33,6 +33,9 @@ setup(
     install_requires=install_requires,
     packages=find_packages('src', exclude=['distribute_setup']),
     package_dir={'': 'src'},
+    package_data={
+        'milla': ['milla.ico'],
+    },
     entry_points={
         'milla.request_validator': [
             'default = milla.auth:RequestValidator'

src/milla/controllers.py

@@ -24,9 +24,8 @@ from one or more of these classes can make things significantly easier.
 '''
 
 import milla
-import os
+import pkg_resources
 
-__all__ = ['Controller', 'FaviconController']
 
 class Controller(object):
     '''The base controller class
@@ -41,28 +40,36 @@ class Controller(object):
     def __after__(self, request):
         pass
 
+
 class FaviconController(Controller):
     '''A controller for the "favicon"
 
     This controller is specifically suited to serve a site "favicon" or
     bookmark icon. By default, it will serve the *Milla* icon, but you
-    can pass an alternate file time to the constructor.
+    can pass an alternate filename to the constructor.
 
     :param icon: Path to an icon to serve
+    :param content_type: Internet media type describing the type of image
+       used as the favicon, defaults to 'image/x-icon' (Windows ICO format)
     '''
 
-    def __init__(self, icon=None):
-        if not icon:
-            icon = os.path.join(os.path.dirname(milla.__file__), 'milla.ico')
+    def __init__(self, icon=None, content_type='image/x-icon'):
+        if icon:
             try:
                 self.icon = open(icon)
             except (IOError, OSError):
                 self.icon = None
+        else:
+            try:
+                self.icon = pkg_resources.resource_stream('milla', 'milla.ico')
+            except IOError:
+                self.icon = None
+        self.content_type = content_type
 
     def __call__(self, request):
         if not self.icon:
             raise milla.HTTPNotFound
         response = milla.Response()
         response.app_iter = self.icon
-        response.headers['Content-Type'] = 'image/x-icon'
+        response.headers['Content-Type'] = self.content_type
         return response