Update 'PKGBUILD'

PKGBUILD

@@ -21,8 +21,9 @@ build() {
 	python2 setup.py build;
 }
 package() {
+	install -Dm644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
 	cd "$srcdir/$pkgname"
-    mkdir usr;
+	mkdir usr;
 	export PYTHONUSERBASE=$pkgdir/usr;
 	python2 setup.py install --user;
 }