Updated README. (#19)

Author: JonathanHenson

README.md

@@ -12,7 +12,8 @@ for a stable development environment.
 This SDK is built on the AWS Common Runtime, a collection of libraries
 ([1](https://github.com/awslabs/aws-c-common),
 [2](https://github.com/awslabs/aws-c-io),
-[3](https://github.com/awslabs/aws-c-mqtt), ...) written in C to be
+[3](https://github.com/awslabs/aws-c-mqtt),
+[4](https://github.com/awslabs/aws-c-http)...) written in C to be
 cross-platform, high-performance, secure, and reliable. The libraries are bound
 to C++ by the [aws-crt-cpp](https://github.com/awslabs/aws-crt-cpp) package.
 
@@ -29,7 +30,7 @@ is provided by code that been generated from a model of the service.
 
 ## Build from source
 ```
-git clone --branch v0.1.4 https://github.com/awslabs/aws-crt-cpp.git
+git clone --branch v0.2.0 https://github.com/awslabs/aws-crt-cpp.git
 git clone https://github.com/awslabs/aws-iot-device-sdk-cpp-v2.git
 mkdir aws-crt-cpp-build
 cd aws-crt-cpp-build