message: Document compiler versions that have been "tested", rather than "supported"
diff: @@ -11,10 +11,25 @@ title = "Installing the mongocxx driver"
  ## Prerequisites
  - Any standard Unix platform, or Windows 7 SP1+
  -- GCC 4.8.2+, Clang 3.5+, Apple Clang 5.1+, or Visual Studio C++ 2015
  - Update 1 or later
  +- A compiler that suports C++11 (gcc, clang, or Visual Studio)
  - CMake 3.2 or later
  -- On Windows, boost 1.56 or later
  +- boost (optional)
  +
  +We currently test the driver with the following configurations:
  +
  +&nbsp; | Linux | OS X | Windows
  +-------|----------|-------------|-------------------
  + clang | 3.8 | 7.0 (Apple) | -
  + gcc | 4.8, 5.4 | - | -
  + VS | n/a | n/a | 14 (2015) Update 3
  + boost | - | 1.5.3 | 1.6.0
  +
  +With the exception of Visual Studio (for which mongocxx supports version 14
  +update 1 and newer), versions older the the ones listed may not work and are not
  +supported; use them at your own risk.
  +
  +Versions newer than the ones listed above should work; if you
  +have problems, please file a bug report or JIRA ticket.
  ## Installation
  