Update setup.py (#268)

Author: janbender

setup.py

@@ -120,6 +120,9 @@ def build_extension(self, ext):
 splishsplash_version = f.readline().strip()
 f.close() 
 
+# create build directory
+os.mkdir('build')
+
 setup(
     name=name,
     version=splishsplash_version,
@@ -142,4 +145,4 @@ def build_extension(self, ext):
 				(fonts_dest, [f for f in fonts if os.path.isfile(f)])],
     zip_safe=False,
     install_requires=['numpy']
-)
+)