Remove Surge's app-store url. (#1131)

README.md

@@ -812,7 +812,7 @@ Any comments, suggestions? [Let us know!](https://github.com/jaywcjlove/awesome-
 * [ShadowsocksX](http://shadowsocks.org/) - Secure socks5 proxy, designed to protect your internet traffic. [![Open-Source Software][OSS Icon] ![Freeware][Freeware Icon]](https://github.com/shadowsocks/shadowsocks)
 * [Shimo](https://www.shimovpn.com/) - VPN Client for Mac.
 * [SpechtLite](https://github.com/zhuhaow/SpechtLite) - Rule-based proxy app for macOS.  [![Open-Source Software][OSS Icon]](https://github.com/shadowsocks) ![Freeware][Freeware Icon]
-* [Surge](https://nssurge.com/) - Web developer tool and proxy utility for iOS 9. [![App Store][app-store Icon]](https://itunes.apple.com/us/app/surge-web-developer-tool-proxy/id1040100637)
+* [Surge](https://nssurge.com/) - Web developer tool and proxy utility for iOS 9.
 * [tinc](https://www.tinc-vpn.org) - Secure mesh VPN software. [![Open-Source Software][OSS Icon]](https://www.tinc-vpn.org/git/browse?p=tinc) ![Freeware][Freeware Icon]
 * [Tunnelbear](https://www.tunnelbear.com) - Really simple VPN to browse the web privately & securely. Unblock websites around the world with applications for Mac, PC, iOS, Android & Chrome.
 * [Tunnelblick](https://tunnelblick.net/downloads.html) - Free, open-source graphic user interface for OpenVPN on OS X. ![Freeware][Freeware Icon]