Sort includes in libsolidity/parsing

libsolidity/parsing/DocStringParser.cpp

@@ -1,17 +1,33 @@
+/*
+	This file is part of solidity.
+
+	solidity is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	solidity is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
+*/
 
 #include <libsolidity/parsing/DocStringParser.h>
+
 #include <liblangutil/ErrorReporter.h>
 #include <liblangutil/Exceptions.h>
 
-#include <boost/range/irange.hpp>
 #include <boost/range/algorithm.hpp>
+#include <boost/range/irange.hpp>
 
 using namespace std;
 using namespace dev;
 using namespace langutil;
 using namespace dev::solidity;
 
-
 namespace
 {