Fix custom-element warnings (#1)

* Add rollup; Fix custom-element warnings

* Fix root dir path

* Remove custom element tag, and svelte option
Do we really need this?

* Cleanup package.json

* Update lockfiles

.gitignore

@@ -1,3 +1,5 @@
+.DS_Store
 node_modules
+index.js
+index.mjs
 src
-.DS_Store

.npmignore

@@ -1,2 +1 @@
-bin
 svg

bin/build.js → build.js

@@ -10,7 +10,7 @@ const getComponentName = name => {
     return pascalCase(name)
 };
 
-const rootDir = path.join(__dirname, "..");
+const rootDir = path.join(__dirname);
 const svgDir = path.join(rootDir, "./svg");
 
 const iconsDir = path.join(rootDir, "./src/icons");
@@ -36,8 +36,7 @@ if (!fs.existsSync(iconsDir)) {
             const str = icons[name];
             const componentName = getComponentName(name);
             indexContent += `export { default as ${componentName}Icon } from './icons/${componentName}.svelte';\n`;
-            const componentContent = `<svelte:options tag="${name}-icon"/>\n
-<script>
+            const componentContent = `<script>
   export let color = 'currentColor';
   export let size = 24;
   let className = '';
@@ -49,8 +48,7 @@ if (!fs.existsSync(iconsDir)) {
   class={className}
   fill={color}
   width="{size}"
-  height="{size}"
-  >
+  height="{size}">
   ${str}
 </svg>`;
             await fsp.writeFile(path.join(iconsDir, componentName + ".svelte"), componentContent);