Adding readme

README.md

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+TryJoinads.org source code
+==========================
+
+This repository contains the source code of the [TryJoinads.org](http://tryjoinads.org) project.
+The source code contains the (slightly modified) Silverlight F# Interactive console (see `console`),
+Markdown source code for the tutorials (`documents`) and generated HTML files (`output`). 
+The `src` directory contains implementations of joinads for various F# computation types
+(including `Async<'T>`, `Task<'T>` and some others). 
+
+The HTML pages are automatically generated using a script `tools/build.fsx`, which uses
+F# Markdown parser and F# Source Code formatter available in the `lib` directory 
+(the source of both tools is [available on GitHub too](https://github.com/tpetricek/FSharp.Formatting)).
+
+License
+-------
+
+ * **Documents** - the documents available in the repository (mainly `text` and `html` files)
+   are available under the Creative Commons Attribution 2.5 license. 
+   This means that you can copy, distribute and remix the work, but
+   you must attribute the work to the author (by providing a link
+   to the original source and my name).
+
+ * **Source code** - the source code is available under 
+   the Apache 2 license. This means that you can use it in any way,
+   including commercial applications. For more information see
+   [OSI web page](http://www.opensource.org/licenses/Apache-2.0).
+
+Contributions welcome!
+----------------------
+
+If you write an interesting example that uses the `match!` notation that you would like
+to share, feel free to submit a pull request. This would typically include:
+
+  * A tutorial written in Markdown `text` file (in the `documents` directory)
+  * Some addition to the `FSharp.Joinads.Silverlight` project (the `src` directory)
+    if you want to write your own computation expression.
+
+I'm also happy to use the TryJoinads web site to share other experimental F# extensions.
+If you made some changes to the F# compiler that you would like to share, you'll need
+to submit your pull request to [the FSharp.Extensions project](https://github.com/tpetricek/FSharp.Extensions)
+which contains F# compiler source code.
+
+Credits
+-------
+
+If you want to get in touch, you can contact me at [tomas@tomasp.net](mailto:tomas@tomasp.net) 
+or using Twitter at [@tomaspetricek](http://twitter.com/tomaspetricek).