Added libigl library files (header-only library)

xs/src/igl/path_to_executable.h

@@ -0,0 +1,21 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
+// 
+// This Source Code Form is subject to the terms of the Mozilla Public License 
+// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
+// obtain one at http://mozilla.org/MPL/2.0/.
+#ifndef IGL_PATH_TO_EXECUTABLE_H
+#define IGL_PATH_TO_EXECUTABLE_H
+#include "igl_inline.h"
+#include <string>
+namespace igl
+{
+  // Return the path of the current executable.
+  // Note: Tested for Mac OS X
+  IGL_INLINE std::string path_to_executable();
+}
+#ifndef IGL_STATIC_LIBRARY
+#  include "path_to_executable.cpp"
+#endif
+#endif