added readme

README.md

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+
+# ElasticSpot
+Plug-in lambda function for reassigning Elastic IPs to new spot instances on termination inside an ECS cluster.
+
+
+
+## Usage/Examples
+
+```go
+package main
+
+import (
+	"github.com/nickfiggins/elasticspot"
+	...
+)
+
+
+...
+
+func main() {
+	lambda.Start(elasticspot.NewHandler(ec2_sess, elasticIp).Handle)
+}
+```
+
+## Contributing
+
+Contributions are always welcome!
+
+
+## License
+
+[MIT](https://choosealicense.com/licenses/mit/)