Fixed failure to install cacerts.txt
diff --git a/setup.py b/setup.py
index 27f78d6..ef3039f 100755
--- a/setup.py
+++ b/setup.py
@@ -60,6 +60,7 @@
         """,
         package_dir=pkgdir,
         packages=['httplib2'],
+        package_data={'httplib2': '*.txt'},
         classifiers=[
         'Development Status :: 4 - Beta',
         'Environment :: Web Environment',