add readme

README.md

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-# webapp
-Web application for Kevachat
+# Web Application for KevaChat
+
+KevaChat - is platform for open, uncensored and privacy respectable communication with permanent database stored in  blockchain.
+
+Instance require connection to the [Kevacoin](https://github.com/kevacoin-project/) server, `memcached` and `php`.
+
+## Model
+
+KevaChat following open wallet model, where community boost the ballance for talks.
+
+Administrators have flexible settings of access levels explained in the `.env` file: read-only rooms, connection and post limits, etc.
+
+## Communication
+
+Everyone able to join the chat, post messages as ghosty or sign ownership by IP. Also users can explore remote rooms by namespaces if option enabled.
+
+Basic social features like identicons, replies, mentions, RSS subscriptions etc are supported.
+
+## Protocol
+
+KevaChat protocol following native Kevacoin's `key`/`value` model, where `key` - is the `timestamp@username` and `value` - is message.
+
+All messages related to their room `namespaces`.
+
+## Contribution
+
+Project created from people for people, feel free to use it for your own needs, join the development or make your feedback!