feat: add renderasync to browser

src/browser.ts

@@ -1,6 +1,6 @@
 export { default as compileToString } from './compile-string'
 export { default as compile } from './compile'
 export { default as parse } from './parse'
-export { default as render } from './render'
+export { default as render, renderAsync } from './render'
 export { templates } from './containers'
 export { config, config as defaultConfig, getConfig, configure } from './config'