Added license for the Windows build script

utils/build_scripts/windows.bat

@@ -1,3 +1,31 @@
+:: Copyright (c) 2014, The Monero Project
+:: 
+:: All rights reserved.
+:: 
+:: 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. Neither the name of the copyright holder nor the names of its 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 HOLDER 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.
+
 :: Set the following variables according to your environment
 set BuildProcessorArchitecture=64
 set LocationDependencyBoostRoot=D:\Development\boost_1_55_0