add license and update readme

Author: Dan Vittegleo

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Dan Vittegleo
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -10,6 +10,9 @@
 * Personal proxy server not shared with anyone else.
 * Mostly [AWS free tier](https://aws.amazon.com/free/) compatible (see FAQ below).
 
+## Project status
+Current code status: <b>proof of concept</b>. This is the first Go application that I've ever written. It has no tests. Listening endpoints have no security yet. It may not work. It may blow up. Use at your own risk.
+
 ## How it works
 At a high level, awslambdaproxy proxies HTTP(s) traffic through AWS Lambda regional endpoints. To do this, awslambdaproxy is setup on a publicly accessible host (e.g. EC2 instance) and it handles creating Lambda resources that run a simple HTTP proxy ([elazarl/goproxy](https://github.com/elazarl/goproxy)). Since Lambda does not allow you to bind ports in your executing functions, the HTTP proxy is bound to a unix socket and a reverse tunnel is established from the Lambda function to port 8081 on the host running awslambdaproxy. Once a tunnel connection is established, all user web traffic is forwarded from port 8080 through this HTTP proxy. Lambda functions have a max execution time of 5 minutes, so there is a goroutine that continuously executes Lambda functions to ensure there is always a live tunnel in place. If multiple regions are specified, user HTTP traffic will be routed in a round robin fashion across these regions.
 
@@ -74,4 +77,4 @@ The easiest way is to download a pre-built binary from the [GitHub Releases](htt
 * Add security to proxy and tunnel connections
 * Fix connections dropping each time a new tunnel is established
 * Create minimal IAM policy
-* Rewrite code to be testable and write tests
+* Rewrite code to be testable and write tests