Update .travis.yml (#3)
Update .travis.yml (#3)

Update travis to check that `gofmt` reports nothing.
dsnet/safebrowsing,google/safebrowsing,google/safebrowsing,rebrandly/google-safe-browsing,rebrandly/google-safe-browsing,rebrandly/google-safe-browsing,rebrandly/google-safe-browsing,dsnet/safebrowsing,dsnet/safebrowsing,dsnet/safebrowsing,google/safebrowsing,google/safebrowsing