Add BSD-style licensing.

LICENSE

@@ -0,0 +1,90 @@
+The contents of the SixtyPical distribution are distributed under the
+following three licenses.
+
+The documentation and tests (in the `doc` directory) is covered by the
+following BSD-compatible license, modelled after the "Report on the
+Programming Language Haskell 98" license:
+
+-----------------------------------------------------------------------------
+
+  Copyright (c)2014 Chris Pressey, Cat's Eye Technologies.
+
+  The authors intend this Report to belong to the entire SixtyPical
+  community, and so we grant permission to copy and distribute it for
+  any purpose, provided that it is reproduced in its entirety,
+  including this Notice.  Modified versions of this Report may also be
+  copied and distributed for any purpose, provided that the modified
+  version is clearly presented as such, and that it does not claim to
+  be a definition of the SixtyPical Programming Language.
+
+-----------------------------------------------------------------------------
+
+The source code for the reference implementation and supporting tools (in the
+`src` subdirectory) is covered under the following BSD-style license:
+
+-----------------------------------------------------------------------------
+
+   Copyright (c)2014, Chris Pressey, Cat's Eye Technologies.
+   All rights reserved.
+ 
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+     Redistributions of source code must retain the above copyright
+     notices, this list of conditions and the following disclaimer.
+
+     Redistributions in binary form must reproduce the above copyright
+     notices, this list of conditions, and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+
+     Neither the names of the copyright holders nor the names of their
+     contributors may be used to endorse or promote products derived
+     from this software without specific prior written permission. 
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+   FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+   COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+   BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+   CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+   LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+
+-----------------------------------------------------------------------------
+
+All example sources in the `eg` directory were written by Chris Pressey,
+and are hereby placed in the public domain, as described in the following
+UNLICENSE:
+
+-----------------------------------------------------------------------------
+
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>

README.markdown

@@ -19,7 +19,9 @@ equivalent, while some have an equivalent that acts in a slightly different
 Haskell.  It can currently parse and check a SixtyPical program, and can
 emit an Ophis assembler listing for it.
 
-This distribution will soon be placed under an open-source license.
+SixtyPical itself is distributed under a BSD-style open-source license, while
+the example SixtyPical programs in the `eg` directory are in the public domain.
+See the file `LICENSE` for more information.
 
 Quick Start
 -----------