Update README
Update README

Toolchain files are now located under the `standard` directory, update `README.md` to reflect this.
leapmotion/autowiring,leapmotion/autowiring,leapmotion/autowiring,codemercenary/autowiring,leapmotion/autowiring,leapmotion/autowiring,codemercenary/autowiring,codemercenary/autowiring,codemercenary/autowiring,codemercenary/autowiring,codemercenary/autowiring,leapmotion/autowiring