README updates (apple#1757)

* README updates

* Update README.md

Co-authored-by: Cory Benfield <lukasa@apple.com>

Author: weissi

README.md

@@ -18,6 +18,7 @@ Repository | NIO 2 (Swift 5+) | NIO 1 (Swift 4+)
 [https://github.com/apple/swift-nio-http2][repo-nio-http2]<br> HTTP/2 support | `from: "1.0.0"` | `from: "0.1.0"`
 [https://github.com/apple/swift-nio-extras][repo-nio-extras] <br>useful additions around SwiftNIO | `from: "1.0.0"` | `from: "0.1.0"`
 [https://github.com/apple/swift-nio-transport-services][repo-nio-transport-services] <br> first-class support for macOS, iOS, tvOS, and watchOS | `from: "1.0.0"` | `from: "0.1.0"`
+[https://github.com/apple/swift-nio-ssh][repo-nio-ssh] <br> SSH support | `.upToNextMinor(from: "0.1.0")` | _n/a_
 
 ### Protocol Implementations
 
@@ -61,7 +62,7 @@ The latest released SwiftNIO 1 version supports Swift 4.0, 4.1, 4.2, and 5.0.
 
 #### SwiftNIO 2
 
-The latest released SwiftNIO 2 version supports only Swift 5.0, 5.1, and 5.2. If you have a SwiftNIO 1 application or library that you would like to migrate to SwiftNIO 2, please check out the [migration guide](docs/migration-guide-NIO1-to-NIO2.md) we prepared for you.
+The latest released SwiftNIO 2 version supports Swift 5.0, 5.1, 5.2, and 5.3. If you have a SwiftNIO 1 application or library that you would like to migrate to SwiftNIO 2, please check out the [migration guide](docs/migration-guide-NIO1-to-NIO2.md) we prepared for you.
 
 ### Compatibility
 
@@ -228,7 +229,7 @@ modules, specify the following dependencies:
 
     dependencies: ["NIO", "NIOHTTP1"]
 
-#### Swift 5.2 (`swift-tools-version:5.2`)
+#### Swift 5.2 and newer (`swift-tools-version:5.2`)
 
     dependencies: [.product(name: "NIO", package: "swift-nio"),
                    .product(name: "NIOHTTP1", package: "swift-nio")]
@@ -310,7 +311,7 @@ have a few prerequisites installed on your system.
 
 ### Linux
 
-- Swift 5.0, 5.1, or 5.2 from [swift.org/download](https://swift.org/download/#releases). We always recommend to use the latest released version.
+- Swift 5.0, 5.1, 5.2, or 5.3 from [swift.org/download](https://swift.org/download/#releases). We always recommend to use the latest released version.
 - netcat (for integration tests only)
 - lsof (for integration tests only)
 - shasum (for integration tests only)
@@ -349,3 +350,4 @@ dnf install swift-lang /usr/bin/nc /usr/bin/lsof /usr/bin/shasum
 [repo-nio-http2]: https://github.com/apple/swift-nio-http2
 [repo-nio-ssl]: https://github.com/apple/swift-nio-ssl
 [repo-nio-transport-services]: https://github.com/apple/swift-nio-transport-services
+[repo-nio-ssh]: https://github.com/apple/swift-nio-ssh