ionic 2.0.0-alpha.55 发布，更新如下： Bug Fixes alert: ensure keyup listener has been removed (2710e34) build: tell gulp when finished building (60e1278) generators: use mkdirp-no-bin (dcc20fa) input: copy custom attrs from ion-input to native input (4cfe210) menu: fix scrolling page w/ side menus (72699db), closes #5272 menu: only close when open on enable change (a428363) searcher: add autocomplete="off" to native input (f47c3c3) Features actionsheet: disable clicking backdrop to dismiss (7686767) alert: disable clicking backdrop to dismiss (53e014f) Performance Improvements cards: remove translateZ from ion-card (60fdc5c) tabs: render tab navbar at same time of tab content (687a17b) 下载页面：2.0.0-alpha.55 ionic 是个高级的 HTML5 移动端应用框架，是个很漂亮的使用 HTML5 开发混合移动应用前端框架。 ionic 2.0.0-alpha.55 发布，移动应用框架下载地址
