add README

README.md

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+bitcoin-php
+===========
+
+A [Bitcoin][Bitcoin] library for [PHP](http://www.php.net/).
+
+Documentation
+-------------
+
+Documentation can be found at [code.gogulski.com](http://code.gogulski.com/).
+
+Requirements
+------------
+
+### PHP requirements:
+* PHP5
+* cURL support  
+* SSL support (if you're using HTTPS to talk to bitcoind)
+
+Donate
+------
+
+* Bitcoin payments: 1E3d6EWLgwisXY2CWXDcdQQP2ivRN7e9r9
+* Gifts via other methods: <http://www.nostate.com/support-nostatecom/>
+
+Authors
+-------
+
+* [Mike Gogulski](http://github.com/mikegogulski) -
+  <http://www.nostate.com/> <http://www.gogulski.com/>
+
+Credits
+-------
+
+bitcoin-php incorporates code from:
+
+* [XML-RPC for PHP][XML-RPC-PHP] by Edd Dumbill (for JSON-RPC support)
+
+License
+-------
+
+bitcoin-php is free and unencumbered public domain software. For more
+information, see <http://unlicense.org/> or the accompanying UNLICENSE file.
+
+
+[Bitcoin]:		http://www.bitcoin.org/
+[XML-RPC-PHP]:	http://phpxmlrpc.sourceforge.net/