Starting on some examples to use with function tool.

tool/README.md

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+
+# Function Tool
+
+The function tool is a tool to help you build and deploy functions to IronFunctions. 
+
+In your projects root folder, run:
+
+```sh
+iron build
+```
+
+This will iterate through your directories building any changed functions, bumping their version numbers and pushing them to Docker Hub. 
+

tool/examples/hello/.gitignore

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+/hello

tool/examples/hello/Dockerfile

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+FROM iron/go:dev
+
+ADD . /go/src/github.com/treeder/hello
+WORKDIR /go/src/github.com/treeder/hello
+RUN go build github.com/treeder/hello
+
+ENTRYPOINT ["/go/src/github.com/treeder/hello/hello"]

tool/examples/hello/VERSION

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+0.0.1

tool/examples/hello/hello.go

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+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	fmt.Printf("Hello %v!\n", os.Getenv("PAYLOAD"))
+}