Merge pull request #408 from michael-lazar/fix_travis

Fix travis

.travis.yml

@@ -1,5 +1,5 @@
 language: python
-dist: precise
+dist: trusty
 python:
   - 2.7
   - 3.3

tests/test_terminal.py

@@ -37,7 +37,8 @@ def test_terminal_properties(terminal, config):
 
     terminal._display = None
     with mock.patch('rtv.terminal.sys') as sys, \
-            mock.patch.dict('os.environ', {'DISPLAY': ''}):
+            mock.patch('os.environ', {'DISPLAY': ''}), \
+            mock.patch('webbrowser._tryorder', new=[]):
         sys.platform = 'darwin'
         assert terminal.display is True