added Windows exe build script

.gitignore

@@ -1 +1,4 @@
 .DS_Store
+pyinstaller.zip
+pyinstaller-*
+brigadier*.zip

build_windows_exe.py

@@ -0,0 +1,78 @@
+# build_windows_exe.py
+#
+# Builds a Windows exe of brigadier using PyInstaller. PyInstaller
+# will be downloaded to the cwd and its archive kept for later use.
+#
+# Requires:
+# - Python 2.7 for Windows (http://www.python.org/getit)
+# - pywin32 (http://sourceforge.net/projects/pywin32)
+
+import urllib
+import os
+from zipfile import ZipFile, BadZipfile
+import subprocess
+import shutil
+import hashlib
+
+PYINSTALLER_URL = 'http://sourceforge.net/projects/pyinstaller/files/2.0/pyinstaller-2.0.zip/download'
+PYINST_ZIPFILE = os.path.join(os.getcwd(), 'pyinstaller.zip')
+NAME = 'brigadier'
+
+with open('VERSION', 'r') as fd:
+    version = fd.read().strip()
+name_versioned = NAME + '-' + version
+exe_name = NAME + '.exe'
+spec_dir = os.path.join(os.getcwd(), 'spec')
+dist_dir = os.path.join(spec_dir, 'dist')
+pack_dir = os.path.join(os.getcwd(), name_versioned)
+
+need_pyinstaller = False
+if os.path.exists(PYINST_ZIPFILE):
+    print "PyInstaller zipfile found."
+    try:
+        ZipFile(PYINST_ZIPFILE)
+    except BadZipfile:
+        print "Zipfile is corrupt."
+        need_pyinstaller = True
+else:
+    need_pyinstaller = True
+
+if need_pyinstaller:
+    print "Downloading PyInstaller..."
+    urllib.urlretrieve(PYINSTALLER_URL, filename=PYINST_ZIPFILE)
+
+dlzip = ZipFile(PYINST_ZIPFILE)
+pyinst_root = dlzip.namelist()[0].strip('/')
+dlzip.extractall()
+
+print "Building version %s..." % version
+build_cmd = [os.path.join(os.environ["SYSTEMDRIVE"] + "\\", 'Python27', 'python.exe'),
+             os.path.join(os.getcwd(), pyinst_root, 'pyinstaller.py'),
+			 '-F',
+			 '--out', spec_dir,
+			 '--name', NAME,
+			 'brigadier']
+subprocess.call(build_cmd)
+
+print "Compressing to zip file..."
+if not os.path.isdir(pack_dir):
+    os.mkdir(pack_dir)
+os.rename(os.path.join(dist_dir, exe_name),
+          os.path.join(pack_dir, exe_name))
+zipfile_name = name_versioned + '.zip'
+packzip = ZipFile(zipfile_name, 'w')
+packzip.write(os.path.basename(pack_dir))
+packzip.write(os.path.join(os.path.basename(pack_dir), exe_name))
+packzip.close()
+with open(zipfile_name, 'r') as zipfd:
+    sha1 = hashlib.sha1(zipfd.read()).hexdigest()
+
+print "Cleaning up..."
+for dirs in [pack_dir, spec_dir, pyinst_root]:
+    shutil.rmtree(dirs)
+for f in os.listdir(os.getcwd()):
+    if f.startswith('logdict'):
+        os.remove(f)
+
+print "Built and archived to %s." % zipfile_name
+print "SHA1: %s" % sha1