Unpinning to see how upgrading to latest works

.travis.yml

@@ -5,9 +5,25 @@ python:
   - "2.7"
   - "3.5"
   - "3.6"
+env:
+  - PINNED=TRUE
+  - PINNED=FALSE
+
+matrix:
+  allow_failures:
+    - python: 2.6
+      env: PINNED=FALSE
+    - python: 2.7
+      env: PINNED=FALSE
+    - python: 3.5
+      env: PINNED=FALSE
+    - python: 3.6
+      env: PINNED=FALSE
+
 install:
+  - if [ "${PINNED}" == "FALSE" ]; then python scripts/unpin.py; fi
   - pip install -r requirements.txt
-  - pip install -r requirements-test.txt
+  - pip install -U -r requirements-test.txt
   - pip install -q coverage coveralls --use-wheel
 script:
   - py.test --cov=puppetboard --pep8  -v