Update README.md

Explain that I am not going to be able to work on the project for a while, but will review (and probably accept) PRs.

Author: DemiMarie

README.md

@@ -4,6 +4,8 @@ This is a simple Scheme interpreter, written in Rust.  It is intended for extend
 
 It is woefully incomplete yet, to the point that it does not even compile, much less run hello world.  Contributions would be greatly appreciated.
 
+I would love any contributions to be project, and will review any PRs and in all likelyhood will accept them.  I will probably not be able to work much on this project on my own for a while, since college is starting up again. (But I do plan to finish it.)
+
 # License
 
 Licensed under the [MIT license][1] or the [Apache License, Version 2.0][2] at your discretion.  This project may not be copied, modified, or distributed except in accordence with those terms.