Update links.

README.rst

@@ -27,7 +27,7 @@ Features
   header file and a single source file) and compiled code.
   See `Compile time and code bloat`_.
 * Reliability: the library has an extensive set of `unit tests
-  <https://github.com/vitaut/format/blob/master/format_test.cc>`__.
+  <https://github.com/cppformat/format/blob/master/format_test.cc>`__.
 * Safety: the library is fully type safe, errors in format strings are
   reported using exceptions, automatic memory management prevents buffer
   overflow errors.
@@ -118,7 +118,7 @@ Projects using this library
 
 If you are aware of other projects using ``format``, please let me know
 by `email <mailto:victor.zverovich@gmail.com>`__ or by submitting an
-`issue <https://github.com/vitaut/format/issues>`__.
+`issue <https://github.com/cppformat/format/issues>`__.
 
 Motivation
 ----------
@@ -230,7 +230,7 @@ The following speed tests results were generated by building
 runs.  In the test, the format string ``"%0.10f:%04d:%+g:%s:%p:%c:%%\n"`` or
 equivalent is filled 2000000 times with output sent to ``/dev/null``; for
 further details see the `source
-<https://github.com/vitaut/tinyformat/blob/master/tinyformat_test.cpp>`__.
+<https://github.com/cppformat/format-benchmark/blob/master/tinyformat_test.cpp>`__.
 
 ============== ========
 test name      run time
@@ -295,7 +295,7 @@ Running the tests
 
 To run the tests you first need to get the format repository with submodules::
 
-    $ git clone --recursive git://github.com/vitaut/format.git
+    $ git clone --recursive git://github.com/cppformat/format.git
 
 Then go to the format directory and generate Makefiles with
 `CMake <http://www.cmake.org/>`__::
@@ -359,7 +359,7 @@ documentation <http://docs.python.org/3/library/string.html#module-string>`__
 adapted for the current library. For this reason the documentation is
 distributed under the Python Software Foundation license available in
 `doc/LICENSE.python
-<https://raw.github.com/vitaut/format/master/doc/LICENSE.python>`__.
+<https://raw.github.com/cppformat/format/master/doc/LICENSE.python>`__.
 
 Acknowledgments
 ---------------