dial: change to lower case initial

reference: https://github.com/espruino/BangleApps/pull/3847/files#r2280978797

Author: thyttan

modules/Dial.js modules/dial.jsmodules/Dial.js renamed to modules/dial.js

@@ -1,4 +1,4 @@
-function Dial(cb, options) {
+function dial(cb, options) {
   "ram";
   const SCREEN_W = g.getWidth();
   const SCREEN_H = g.getHeight();
@@ -72,4 +72,4 @@ function Dial(cb, options) {
   return onDrag;
 }
 
-exports = Dial;
+exports = dial;

modules/Dial.md modules/dial.mdmodules/Dial.md renamed to modules/dial.md

@@ -1,19 +1,13 @@
-Bangle.js Dial Library
-======================
+Bangle.js Dial Module
+=====================
 
-> Take a look at README.md for hints on developing with this library.
+> Take a look at README.md for hints on developing with this module.
 
 Usage
 -----
 
 ```JS
-var Dial = require("Dial");
-var dial = new Dial(cb, options)
-Bangle.on("drag", dial);
-
-or
-
-var dial = require("Dial")(cb, options);
+var dial = require("dial")(cb, options);
 Bangle.on("drag", dial);
 ```
 
@@ -31,7 +25,7 @@ let options = {
   }
 }
 
-let dial = require("Dial")(cb, options);
+let dial = require("dial")(cb, options);
 Bangle.on("drag", dial);
 ```
 
@@ -57,4 +51,4 @@ Defaults:
 Notes
 -----
 
-A complementary library for drawing graphics is provided in the Dial_Display module.
+A complementary module for drawing graphics is provided in the Dial_Display module.