Update README.md

README.md

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+Implementation of `scope_guard` and `unique_resource` as proposed in [N3949 - Scoped Resource][1].
+
+
+## Documentation
+
+- [*N3949 - Scoped Resource - Generic RAII Wrapper for the Standard Library*][1] (P. Sommerlad, A. L. Sandoval)
 
 ## License
 
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
+[1]: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3949.pdf