Have travis install slicker itself

benjaminjkraft · benjaminjkraft · commit 1677f1a8e065 · 2018-03-23T17:10:08.000-07:00
This is the easiest way for it to get all of slicker itself's deps.

Test plan: push to travis

Auditors: csilvers
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
 language: python
 python:
   - "2.7"
-install: make dev_deps
+install: make dev_deps install
 script: make check
