Merge pull request #17 from paulsapps/master

World map changes and read me updates
Update readme.md

set correct travis-ci url for this repo
Update readme.md

point to the main repo rather than my fork
Update readme.md

Point to the main repo rather than my fork
Merge pull request #18 from paulsapps/master

MSVC2013 support
Update readme.md

Windows build instructions
Update readme.md
build fix