Relicense uritemplate.py

In order to allow users of uritemplate to continue using a library
with the same API under the same license, let's dual-license our
tiny project as both Apache 2 and 3-clause BSD.
diff --git a/LICENSE b/LICENSE
index ee1eb05..26e92ad 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,23 +1,3 @@
-Redistribution and use in source and binary forms, with or without 
-modification, are permitted provided that the following conditions are 
-met:
-
-1. Redistributions of source code must retain the above copyright 
-notice, this list of conditions and the following disclaimer.
-2. Redistributions in binary form must reproduce the above copyright 
-notice, this list of conditions and the following disclaimer in the 
-documentation and/or other materials provided with the distribution.
-3. The name of the author may not be used to endorse or promote products 
-derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+This software is made available under the terms of *either* of the licenses
+found in LICENSE.APACHE or LICENSE.BSD. Contributions to uritemplate.py are
+made under the terms of *both* these licenses.