README: Adjust shields to use swiftpackageindex.com.

README.md

@@ -2,18 +2,12 @@
     <a href="https://www.kitura.io/packages.html#all">
     <img src="https://img.shields.io/badge/docs-kitura.io-1FBCE4.svg" alt="APIDoc">
     </a>
-    <a href="https://travis-ci.org/Kitura/BlueRSA">
-    <img src="https://travis-ci.org/Kitura/BlueRSA.svg?branch=master" alt="Build Status - Master">
-    </a>
-    <img src="https://img.shields.io/badge/os-macOS-green.svg?style=flat" alt="macOS">
-    <img src="https://img.shields.io/badge/os-iOS-green.svg?style=flat" alt="iOS">
-    <img src="https://img.shields.io/badge/os-linux-green.svg?style=flat" alt="Linux">
-    <img src="https://img.shields.io/badge/license-Apache2-blue.svg?style=flat" alt="Apache 2">
-    <a href="http://swift-at-ibm-slack.mybluemix.net/">
-    <img src="http://swift-at-ibm-slack.mybluemix.net/badge.svg" alt="Slack Status">
-    </a>
 </p>
 
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2FKitura%2FBlueRSA%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/Kitura/BlueRSA)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2FKitura%2FBlueRSA%2Fbadge%3Ftype%3Dplatforms)](https://swiftpackageindex.com/Kitura/BlueRSA)
+
+
 # BlueRSA
 
 Swift cross-platform RSA wrapper library for RSA encryption and signing. Works on supported Apple platforms (using Security framework).  Linux (using OpenSSL) is working but is still somewhat of a work in progress.