Fix handling of empty script name

This was revealed through testing with gabbi (to see if the
new Interceptor will work there).

docs/interceptor.rst

@@ -7,7 +7,7 @@ Interceptor
 
 Example using `httplib2`, others are much the same:
 
-.. testcode:: 
+.. testcode::
 
     import httplib2
     from wsgi_intercept.interceptor import Httplib2Interceptor

test/test_interceptor.py

@@ -101,7 +101,7 @@ def test_httplib2_interceptor_https_host():
     port = 443
     http = Http()
     with Httplib2Interceptor(app=app, host=hostname, port=port) as url:
-        assert url == 'https://%s/' % hostname
+        assert url == 'https://%s' % hostname
         response, content = http.request(url)
         assert response.status == 200
         assert 'WSGI intercept successful!' in content.decode('utf-8')

wsgi_intercept/__init__.py

@@ -117,7 +117,7 @@ Additional documentation is available on `Read The Docs`_.
 """
 from __future__ import print_function
 
-__version__ = '0.10.3'
+__version__ = '0.99.0'
 
 
 import sys

wsgi_intercept/interceptor.py

@@ -31,7 +31,7 @@ class Interceptor(object):
         else:
             self.host = host
             self.port = int(port)
-            self.script_name = prefix or '/'
+            self.script_name = prefix or ''
             self.url = self._url_from_primitives()
 
         self._module = import_module('.%s' % self.MODULE_NAME,