add Travis CI, and pre-commit hooks

.travis.yml

@@ -0,0 +1,12 @@
+language: go
+go:
+  - 1.8.x
+  - 1.9.x
+  - tip
+
+before_install:
+  - go get -u -v github.com/spf13/pflag github.com/spf13/viper github.com/ahmetb/govvv github.com/golang/lint/golint
+
+script:
+  - ./.pre-commit.sh
+  - govvv build