Change travis.yml to run on main instead of master since it is the new default branch.

briangow · briangow · commit 963bc0ec1a21 · 2021-05-14T13:00:49.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 branches:
   only:
-  - master
+  - main
 
 addons:
   postgresql: '9.4'
