update travis-ci testing config

for this fork (but set import path to bitly for now)
only build master branch (avoid my own feature branches)
update travis dist to ubuntu-16.04
update go versions to include up to go-1.11
update dep to version 0.5
explicit install step to avoid default "go get -t -v ./..."

.travis.yml

@@ -1,12 +1,19 @@
+dist: xenial
 language: go
 go:
   - 1.8.x
   - 1.9.x
-script:
-  - wget -O dep https://github.com/golang/dep/releases/download/v0.3.2/dep-linux-amd64
+  - 1.10.x
+  - 1.11.x
+go_import_path: github.com/bitly/oauth2_proxy
+install:
+  - wget -O dep https://github.com/golang/dep/releases/download/v0.5.0/dep-linux-amd64
   - chmod +x dep
   - ./dep ensure
+script:
   - ./test.sh
-sudo: false
+branches:
+  only:
+  - master
 notifications:
   email: false

README.md

@@ -4,7 +4,7 @@ oauth2_proxy
 A reverse proxy and static file server that provides authentication using Providers (Google, GitHub, and others)
 to validate accounts by email, domain or group.
 
-[![Build Status](https://secure.travis-ci.org/bitly/oauth2_proxy.svg?branch=master)](http://travis-ci.org/bitly/oauth2_proxy)
+[![Build Status](https://secure.travis-ci.org/ploxiln/oauth2_proxy.svg?branch=master)](http://travis-ci.org/ploxiln/oauth2_proxy)
 
 
 ![Sign In Page](https://cloud.githubusercontent.com/assets/45028/4970624/7feb7dd8-6886-11e4-93e0-c9904af44ea8.png)