+ Complete readme.

1 files changed, 40 insertions, 4 deletions

diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,17 +1,53 @@
 # Synopsis
 
-Just a [faster][1] BEncode package.
+BEncode is JSON-like format used in bittorrent protocol but might be
+used anywhere else.
 
 # Description
 
-Bencode (pronounced like B encode) is the encoding used by the peer-to-peer
-file sharing system BitTorrent for storing and transmitting loosely structured data.
-See full documentation at ```src/Data/BEncode.hs```.
+This package implements fast seamless encoding/decoding to/from
+bencode format for many native datatypes. To achive
+[more performance][1] we use new bytestring builders and hand
+optimized attoparsec parser so this library is considered as
+replacement for BEncode and AttoBencode packages.
+
+## Format
+
+Bencode is pretty similar to JSON: it has dictionaries(JSON objects),
+lists(JSON arrays), strings and integers. However bencode has a few
+advantages:
+
+* No spaces in between any values — nor lists nor dicts nor anywhere else.
+* Dictionaries always sorted lexicographically by the keys. This allow
+  us to test data on equality without decoding from raw bytestring.
+  Moreover this allow to hash encoded data (this property is heavily
+  used by core bittorrent protocol).
+* All strings prefixed with its length. This simplifies and speed up
+  string parsing.
+
+
+As always, each advantage has its disadvantage:
+
+* Bencode is certainly less human readable than JSON.
+* Bencode is rarely used. Except bittorrent protocol of course. But
+  this might be not a problem if you are searching for format for
+  internal use only.
+
+
+# Documentation
+
+For documentation see haddock generated documentation.
 
 # Build Status
 
 [![Build Status][2]][3]
 
+# Authors
+
+This library is written and maintained by Sam T. <pxqr.sta@gmail.com>
+Feel free to report bugs and suggestions via github issue tracker or the mail.
+
+
 [1]: http://htmlpreview.github.com/?https://github.com/pxqr/bencoding/master/bench/comparison.html
 [2]: https://travis-ci.org/pxqr/bencoding.png
 [3]: https://travis-ci.org/pxqr/bencoding