Add pip caching for tests

linuxdaemon · linuxdaemon · commit 3a54ef9ae13e · 2018-01-07T10:29:28.000-06:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,6 +5,8 @@ python:
   - "3.6"
   - "3.7-dev"
 
+cache: pip
+
 install:
   - "sudo apt-get update -q"
   - "sudo apt-get install -y python3-lxml libenchant-dev"
