Add travis CICD coverage.

Also, rename "kexpand" to "kinflate" to ease pronunciation.

.travis.yml

@@ -0,0 +1,17 @@
+language: go
+
+go:
+  - 1.9.x
+
+go_import_path: k8s.io/kubectl
+
+before_install:
+  - go get -u github.com/golang/lint/golint
+  - go get -u golang.org/x/tools/cmd/goimports
+
+script:
+  - ./bin/pre-commit.sh
+
+# TBD, suppressing for now.
+notifications:
+  email: false

bin/pre-commit.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+if [ -n "$failIt" ]; then
+	echo "Expecting failIt to be empty."
+  exit 1
+fi
+
+tmp=$(gofmt -s -d -l . 2>&1 )
+if [ -n "$tmp" ]; then
+		printf >&2 'gofmt failed for:\n%s\n' "$tmp"
+		failIt=1
+fi
+
+tmp=$(goimports -l .)
+if [ -n "$tmp" ]; then
+		printf >&2 'goimports failed for:\n%s\n' "$tmp"
+		failIt=1
+fi
+
+tmp=$(go vet -all ./... 2>&1)
+if [ -n "$tmp" ]; then
+		printf >&2 'govet failed for:\n%s\n' "$tmp"
+		failIt=1
+fi
+
+tmp=$(golint ./...)
+if [ -n "$tmp" ]; then
+		printf >&2 'golint failed for:\n%s\n' "$tmp"
+		failIt=1
+fi
+
+if [ -n "$failIt" ]; then
+	unset failIt
+  exit 1
+fi
+
+go test -v ./...

cmd/kinflate/README.md

@@ -1,8 +1,8 @@
-# kexpand
+# kinflate
 
 _TODO: flesh out this placeholder documentation_
  
-`kexpand` is a kubernetes cluster configuration utility,
+`kinflate` is a kubernetes cluster configuration utility,
 a prototype of ideas discussed in [this doc][DAM].
 
 It accepts one or more file system path arguments,
@@ -29,7 +29,7 @@ For example, if your current working directory contained
 
 then the command 
 ```
-kexpand ./mycluster/instances | kubectl apply -f -
+kinflate ./mycluster/instances | kubectl apply -f -
 ```
 would modify your cluster per the resources
 generated from the manifests and associated

cmd/kinflate/main.go

@@ -20,6 +20,12 @@ import (
 	"fmt"
 )
 
-func main() {
+// TestableMain allows test coverage for main.
+func TestableMain() error {
 	fmt.Println("Hello world.")
+	return nil
+}
+
+func main() {
+	TestableMain()
 }

cmd/kinflate/main_test.go

@@ -0,0 +1,32 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package main
+
+import (
+	"testing"
+)
+
+// TODO: real tests
+// e.g. make an inmemory file system, put yaml in there, inflate it
+// to a buffer, compare to expected results, etc.
+// a script in there, have script write file
+func TestTrueMain(t *testing.T) {
+	err := TestableMain()
+	if err != nil {
+		t.Errorf("Unexpected error: %v", err)
+	}
+}