Update travis

.travis.yml

@@ -1,7 +1,34 @@
 language: go
-gobuild_args: -x -ldflags "-X main.githash=$(git log --pretty=format:'%h' -n 1)"
 go:
-    - 1.6.x
     - 1.7.x
     - 1.8.x
-    - master
+    - tip
+install: true
+
+matrix:
+  # It's ok if our code fails on unstable development versions of Go.
+  allow_failures:
+    - go: tip
+  # Don't wait for tip tests to finish. Mark the test run green if the
+  # tests pass on the stable versions of Go.
+  fast_finish: true
+
+notifications:
+      email: false
+
+before_script:
+  - GO_FILES=$(find . -iname '*.go' | grep -v /vendor/)  # All the .go files, excluding vendor/
+  - PKGS=$(go list ./... | grep -v /vendor/)             # All the import paths, excluding vendor/
+#  - go get github.com/golang/lint/golint                 # Linter
+  - go get honnef.co/go/tools/cmd/megacheck              # Badass static analyzer/linter
+
+# Anything in before_script: that returns a nonzero exit code will
+# flunk the build and immediately stop. It's sorta like having
+# set -e enabled in bash. 
+script:
+script:
+  - test -z $(gofmt -s -l $GO_FILES)  # Fail if a .go file hasn't been formatted with gofmt
+  #- go test -v -race $PKGS            # Run all the tests with the race detector enabled
+  - go vet $PKGS                      # go vet is the official Go static analyzer
+  - megacheck $PKGS                   # "go vet on steroids" + linter
+  #- golint -set_exit_status $PKGS     # one last linter