Windows Install Support. (install to local dir)

New Windows install support.

Will now install debug, and x64 support.  Use nmake.

Documentation needs to be updated to include the following guide:

```
$ git clone https://github.com/ChaiScript/ChaiScript.git
$ cd ChaiScript
$ git checkout ChaiScript_5_0_CPP_11
$ git clean -fxd

For x86, open up the "VS2013 x86 Native Tools Command Prompt" and ...
For x64, open up the "VS2013 x64 Cross Tools Command Prompt" run (each)...

$ mkdir build && cd build
$ cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX:PATH="../install" -DCMAKE_BUILD_TYPE:STRING="Debug" ..
$ nmake && nmake TEST
$ nmake INSTALL && nmake CLEAN
$ cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX:PATH="../install" -DCMAKE_BUILD_TYPE:STRING="Release" ..
$ nmake && nmake TEST
$ nmake INSTALL && nmake CLEAN
$ rmdir /S build
```