Moved include folder inside the sdk folder.
Moved base/tinyxml to sdk/tinyxml
Updated file layout notes.
Updated git ignore and CB project; project still has issues. TinyXML linking error in SDK link step.
Had to add the define EXPORT_LIB to tinyxml target; no idea why the normal CB builds without it.
Fixed compiling in src/CodeBlocks.cbp with the new file layout.