Build also on python 3.2 and 3.3

.travis.yml

@@ -2,4 +2,6 @@ language: python
 python:
   - "2.6"
   - "2.7"
+  - "3.2"
+  - "3.3"
 script: make test

tests/test_helper.py

@@ -1,17 +1,16 @@
 import sys
-from StringIO import StringIO
+try:
+    from StringIO import StringIO
+except ImportError:
+    from io import StringIO
 
 
 stdout = None
 
 
 def assert_printed(expected):
-    if isinstance(expected, basestring):
     success = expected in stdout.getvalue()
     assert success, 'expected text "%s" not printed' % expected
-    else:
-        success = expected.match(stdout.getvalue())
-        assert success, 'expected pattern "%s" not printed' % expected.pattern
 
 
 def assert_not_printed(expected):

tests/version_command_test.py

@@ -1,6 +1,6 @@
 from asciinema.commands.version import VersionCommand
 from asciinema.common import VERSION
-from test_helper import assert_printed, Test
+from .test_helper import assert_printed, Test
 
 
 class TestVersionCommand(Test):