Getting windows to build.

Updating build instructions to use git.
Updating to wxWidgets 3.0.0
Fixing build issues.
Updating to visual studio 2013.
Getting windows to build.

Updating build instructions to use git.
Updating to wxWidgets 3.0.0
Fixing build issues.
Updating to visual studio 2013.
Merge pull request #49 from calband/update_windows_to_latest

Update windows to latest