message: Simplified statement about moving to C++11 (suggested in PR review)
diff: @@ -35,7 +35,7 @@ The Axom project release numbers follow [Semantic Versioning](http://semver.org/
  -
  ### Changes
  -- To access all functionality, Axom now requires a C++11 compiler.
  +- Axom now requires a C++11 compiler.
  - Refactored Axom's Matrix/Vector operators and consolidated them in one file.
  - Removed overloaded arithmetic operators from the Matrix class to avoid
  potential negative performance impacts. Applications should use the new
  