Updated travis config -- they do not have 3.7 currently

ahknight · ahknight · commit 8712e9b026eb · 2018-11-28T14:37:16.000-06:00
diff --git a/.travis.yml b/.travis.yml
@@ -4,7 +4,6 @@ python:
   - "3.4"
   - "3.5"
   - "3.6"
-  - "3.7"
 install:
   - pip install .
   - pip install nose
