Made compilation directions simpler

docs/docs/compile.xml

@@ -59,14 +59,11 @@ cd examples
 mkdir build
 cd build
 cmake ..
+cmake --build . --config Release
 </code_box>
-Then cmake will create whatever is needed to compile the examples on your computer.  If you are using Linux 
-or a Mac it will create a makefile and then you can compile everything by typing:
-<code_box>
-make
-</code_box>
-Or on windows, if you have Visual Studio installed, it will make a Visual Studio project which you can then open
-and compile by clicking the build button.
+Note that you also need to have a C++ compiler installed on your system.  There are free C++ compilers
+for most operating systems.  For example, Visual Studio Express is free on Windows and GCC is free and
+works well on Mac OS X and Linux systems.
 
         <h2>Compiling on Linux From Command Line</h2>
         From within the examples folder, you can compile any of the examples with a single command like so: