Fix: Indent consistently

Author: localheinz

.travis.yml

@@ -11,8 +11,8 @@ php:
 
 matrix:
   fast_finish: true
-    allow_failures:
-        - php: 7
+  allow_failures:
+    - php: 7
 
 install:
   - sudo apt-get -y install pypy python-sphinx graphviz