Ensure defaults for booleans is set correctly

Fixes #16

README.md

@@ -72,7 +72,7 @@ By default, GoTTY starts a web server at port 8080. Open the URL on your web bro
    --height value                Static height of the screen, 0(default) means dynamically resize (default: 0) [$GOTTY_HEIGHT]
    --ws-origin value             A regular expression that matches origin URLs to be accepted by WebSocket. No cross origin requests are acceptable by default [$GOTTY_WS_ORIGIN]
    --term value                  Terminal name to use on the browser, one of xterm or hterm. (default: "xterm") [$GOTTY_TERM]
-   --enable-webgl                Enable WebGL renderer (default: false) [$GOTTY_ENABLE_WEBGL]
+   --enable-webgl                Enable WebGL renderer (default: true) [$GOTTY_ENABLE_WEBGL]
    --close-signal value          Signal sent to the command process when gotty close it (default: SIGHUP) (default: 1) [$GOTTY_CLOSE_SIGNAL]
    --close-timeout value         Time in seconds to force kill process after client is disconnected (default: -1) (default: -1) [$GOTTY_CLOSE_TIMEOUT]
    --config value                Config file path (default: "~/.gotty") [$GOTTY_CONFIG]

release-checklist.md

@@ -5,4 +5,4 @@
  * Check that cross-compilation works.
  * Ensure NEWS is up-to-date
  * Ensure contributor list is up-to-date
- * Ensure VERSION is set correctly in Makefile
+ * Ensure usage is correct in Makefile

utils/flags.go

@@ -46,10 +46,11 @@ func GenerateFlags(options ...interface{}) (flags []cli.Flag, mappings map[strin
 				})
 			case reflect.Bool:
 				flags = append(flags, &cli.BoolFlag{
-					Name:    flagName,
-					Usage:   flagDescription,
-					EnvVars: []string{envName},
-					Aliases: aliases,
+					Name:        flagName,
+					Usage:       flagDescription,
+					EnvVars:     []string{envName},
+					Aliases:     aliases,
+					DefaultText: field.Tag("default"),
 				})
 			case reflect.Int:
 				flags = append(flags, &cli.IntFlag{