add README

README.md

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+# redstoner.com
+
+Redstoner's ruby-on-rails website with blog, forum, etc.
+
+# Installation
+
+You need a MySQL server with `utf8mb4` support.
+If you have issues, try adding this to your `my.cnf`:
+```
+[mysqld]
+character-set-client-handshake = FALSE
+character-set-server = utf8mb4
+collation-server = utf8mb4_unicode_ci
+```
+
+The rest should be a default rails installation:
+```shell
+bundle
+rake db:setup
+rails s
+```
+
+Note: We currently use rails [4-2-stable](https://github.com/rails/rails/tree/4-2-stable) because it has backported [support for `utf8mb4`](https://github.com/rails/rails/commit/37e5770fd3db04f3206075d736fc14161dd04530).

README.rdoc

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-== Redstoner.com
-I'm too lazy to write something here :D