Run tests properly even if it's failing due to throttling.

.travis.yml

@@ -13,4 +13,4 @@ python:
 install: pip install -r requirements.txt
 
 # command to run tests, e.g. python setup.py test
-script: python -m unittest tests.test_skyscanner
+script: python runtests.py

runtests.py

@@ -0,0 +1,19 @@
+import unittest
+
+testmodules = [
+    'tests.test_skyscanner'
+]
+
+suite = unittest.TestSuite()
+
+for t in testmodules:
+    try:
+        # If the module defines a suite() function, call it to get the suite.
+        mod = __import__(t, globals(), locals(), ['suite'])
+        suitefn = getattr(mod, 'suite')
+        suite.addTest(suitefn())
+    except (ImportError, AttributeError):
+        # else, just load all the test cases from the module.
+        suite.addTest(unittest.defaultTestLoader.loadTestsFromName(t))
+
+unittest.TextTestRunner().run(suite)