Drop python 2.5; install parsley for running tests.

Author: habnabit

.travis.yml

@@ -1,11 +1,10 @@
 language: python
 python:
-  - "2.5"
   - "2.6"
   - "2.7"
 
 install:
-  - "pip install pytest Twisted python-coveralls --use-mirrors"
+  - "pip install pytest Twisted python-coveralls . --use-mirrors"
 script:
   - "coverage run -a $(which py.test) test_parsley"
   - "coverage run -a $(which py.test) examples"