split v1 docs into individual pages

docs/v1/getting-started.md

@@ -0,0 +1,60 @@
+One of the philosophies behind cli is that an API should be playful and full of
+discovery. So a cli app can be as little as one line of code in `main()`.
+
+<!-- {
+  "args": ["&#45;&#45;help"],
+  "output": "A new cli application"
+} -->
+``` go
+package main
+
+import (
+  "log"
+  "os"
+
+  "github.com/urfave/cli"
+)
+
+func main() {
+  err := cli.NewApp().Run(os.Args)
+  if err != nil {
+    log.Fatal(err)
+  }
+}
+```
+
+This app will run and show help text, but is not very useful. Let's give an
+action to execute and some help documentation:
+
+<!-- {
+  "output": "boom! I say!"
+} -->
+``` go
+package main
+
+import (
+  "fmt"
+  "log"
+  "os"
+
+  "github.com/urfave/cli"
+)
+
+func main() {
+  app := cli.NewApp()
+  app.Name = "boom"
+  app.Usage = "make an explosive entrance"
+  app.Action = func(c *cli.Context) error {
+    fmt.Println("boom! I say!")
+    return nil
+  }
+
+  err := app.Run(os.Args)
+  if err != nil {
+    log.Fatal(err)
+  }
+}
+```
+
+Running this already gives you a ton of functionality, plus support for things
+like subcommands and flags, which are covered below.