Update .travis.yml

Author: juancarlospaco

.travis.yml

@@ -5,25 +5,26 @@ language: python
 
 
 python:
-    - "2.7"
-    - "3.4"
-    - "pypy"
-#    - "pypy3" # pypy3 is running with pypy2 I dunno why,commented so test pass
-    - "nightly"
+    - 2.7
+    - 3.4
+    - 3.5-dev
+    - pypy
+#   - pypy3
+    - nightly
 
 
 os:
     - linux
 #    - osx
 
 
-before_install: true
+before_install: pip install --upgrade pip --quiet
 
 
 install: true
 
 
-before_script: rm --recursive --force --verbose *.py[cod]
+before_script: pyclean --verbose .
 
 
 script: