Add server

.gitignore

@@ -0,0 +1 @@
+main

main.go

@@ -0,0 +1,13 @@
+package main
+
+import (
+  "fmt"
+  "net/http"
+)
+
+func main() {
+  http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+    fmt.Fprintf(w, "Hello, world!")
+  })
+  http.ListenAndServe(":80", nil)
+}