add brew install to readme and spot os roadmap (#43)

* add brew install to readme and spot os roadmap

* Update README.md

Author: bwagner5

README.md

@@ -35,10 +35,20 @@ Instance Selector can also be consumed as a go library for direct integration in
 ## Major Features
 
 - Filter AWS Instance Types using declarative resource criteria like vcpus, memory, network performance, and much more!
+- Aggregate filters allow for more opinionated instance selections like `--base-instance-type` and `--flexible`
 - Consumable as a go library
 
 ## Installation and Configuration
 
+#### Install w/ Homebrew
+
+```
+brew tap aws/tap
+brew install ec2-instance-selector
+```
+
+#### Install w/ Curl for Linux/Mac
+
 ```
 curl -Lo ec2-instance-selector https://github.com/aws/amazon-ec2-instance-selector/releases/download/v1.3.0/ec2-instance-selector-`uname | tr '[:upper:]' '[:lower:]'`-amd64 && chmod +x ec2-instance-selector
 ```
@@ -267,6 +277,8 @@ For build instructions please consult [BUILD.md](./BUILD.md).
 ## Communication
 If you've run into a bug or have a new feature request, please open an [issue](https://github.com/aws/amazon-ec2-instance-selector/issues/new).
 
+Check out the open source [Amazon EC2 Spot Instances Integrations Roadmap](https://github.com/aws/ec2-spot-instances-integrations-roadmap) to see what we're working on and give us feedback! 
+
 ##  Contributing
 Contributions are welcome! Please read our [guidelines](https://github.com/aws/amazon-ec2-instance-selector/blob/master/CONTRIBUTING.md) and our [Code of Conduct](https://github.com/aws/amazon-ec2-instance-selector/blob/master/CODE_OF_CONDUCT.md).