drop completely borked python 3 + django installs

Author: bryanhelmig

.travis.yml

@@ -33,6 +33,14 @@ matrix:
       env: DJANGO_VERSION="1.10"
     - python: "3.3"
       env: DJANGO_VERSION="1.11"
+    - python: "3.6"
+      env: DJANGO_VERSION="1.4"
+    - python: "3.6"
+      env: DJANGO_VERSION="1.5"
+    - python: "3.6"
+      env: DJANGO_VERSION="1.6"
+    - python: "3.6"
+      env: DJANGO_VERSION="1.7"
 
 before_deploy:
   - pip install wheel