Snakecase all folders and filenames

Go doesn't have a standardized way of naming files:

golang/go#36060

But I'm going with snakecase, since `go test` finds files using the
`*_test.go` convention.

Author: hahuang65

chooseYourOwnAdventure/chooseYourOwnAdventure.go renamed to choose_your_own_adventure/choose_your_own_adventure.go

@@ -1,4 +1,4 @@
-package chooseYourOwnAdventure
+package choose_your_own_adventure
 
 import (
 	"encoding/json"
@@ -16,7 +16,7 @@ import (
 type ChooseYourOwnAdventure struct{}
 
 func (c *ChooseYourOwnAdventure) CommandName() string {
-	return "chooseYourOwnAdventure"
+	return "choose_your_own_adventure"
 }
 
 func (c *ChooseYourOwnAdventure) Run(args []string) {
@@ -29,7 +29,7 @@ func (c *ChooseYourOwnAdventure) Run(args []string) {
 	cmd.Parse(args)
 
 	story := parseStory(jsonPath)
-	html := template.Must(template.ParseFiles("chooseYourOwnAdventure/template.html"))
+	html := template.Must(template.ParseFiles(fmt.Sprintf("%s/template.html", c.CommandName())))
 	handler := storyHandler{story: story, template: html}
 
 	mux := http.NewServeMux()

chooseYourOwnAdventure/gopher.json renamed to choose_your_own_adventure/gopher.json

@@ -1,4 +1,4 @@
-package linkParser
+package link_parser
 
 import (
 	"flag"
@@ -14,7 +14,7 @@ import (
 type LinkParser struct{}
 
 func (l *LinkParser) CommandName() string {
-	return "linkParser"
+	return "link_parser"
 }
 
 func (l *LinkParser) Run(args []string) {

chooseYourOwnAdventure/template.html renamed to choose_your_own_adventure/template.html

@@ -1,4 +1,4 @@
-package linkParser
+package link_parser
 
 import (
 	"os"

link_parser/link_parser.go

@@ -4,10 +4,10 @@ import (
 	"fmt"
 	"os"
 
-	"git.sr.ht/~hwrd/gophercises/chooseYourOwnAdventure"
-	"git.sr.ht/~hwrd/gophercises/linkParser"
+	"git.sr.ht/~hwrd/gophercises/choose_your_own_adventure"
+	"git.sr.ht/~hwrd/gophercises/link_parser"
 	"git.sr.ht/~hwrd/gophercises/quiz"
-	"git.sr.ht/~hwrd/gophercises/urlShortener"
+	"git.sr.ht/~hwrd/gophercises/url_shortener"
 	"git.sr.ht/~hwrd/gophercises/util"
 )
 
@@ -17,10 +17,10 @@ func addSubcommand(m map[string]util.Subcommand, cmd util.Subcommand) {
 
 func main() {
 	subcommands := make(map[string]util.Subcommand)
-	addSubcommand(subcommands, &chooseYourOwnAdventure.ChooseYourOwnAdventure{})
-	addSubcommand(subcommands, &linkParser.LinkParser{})
+	addSubcommand(subcommands, &choose_your_own_adventure.ChooseYourOwnAdventure{})
+	addSubcommand(subcommands, &link_parser.LinkParser{})
 	addSubcommand(subcommands, &quiz.Quiz{})
-	addSubcommand(subcommands, &urlShortener.URLShortener{})
+	addSubcommand(subcommands, &url_shortener.URLShortener{})
 
 	subcommand := os.Args[1]
 	if cmd, ok := subcommands[subcommand]; ok {

link_parser/link_parser_test.go

@@ -1,4 +1,4 @@
-package urlShortener
+package url_shortener
 
 import (
 	"flag"
@@ -20,7 +20,7 @@ type url struct {
 }
 
 func (u *URLShortener) CommandName() string {
-	return "urlShortener"
+	return "url_shortener"
 }
 
 func (u *URLShortener) Run(args []string) {