Remove submodules and use pip

Author: wouterj

.travis.yml

@@ -1,8 +1,14 @@
 language: python
 
-python:
-    - "2.7"
+python: 2.7
 
-install: "pip install -q -r requirements.txt --use-mirrors"
+sudo: false
+
+cache:
+    directories:
+        - $HOME/.cache/pip
+        - _build
+
+install: pip install sphinx~=1.3 git+https://github.com/fabpot/sphinx-php.git
 
 script: sphinx-build -nW -b html -d _build/doctrees . _build/html