Fix paths for testing

Author: Luca De Feo

.travis.yml

@@ -28,5 +28,5 @@ install:
   - pip install --verbose .
 # command to run tests
 script:
-  - (cd tests && python rundoctest.py)
+  - python tests/rundoctest.py
   - (cd docs && make html)

tests/rundoctest.py

@@ -9,7 +9,7 @@
 path = os.path.dirname(__file__)
 if path:
     os.chdir(path)
-    os.chdir('..')
+os.chdir('..')
 
 failed = 0
 attempted = 0