Changed zip function to produce tuple instead of take projection arg
Added zipWith function to replace old zip function; moved projection argument to first position for ease of currying
Added zip3 function for consistency with other similar modules
Fixed tutorial
Another unrelated tutorial fix
fix a typo in tutorial.fsx
Merge pull request #45 from vasily-kirichenko/master

fix a typo in tutorial.fsx
Update build.fsx
Merge pull request #41 from alexfoxgill/zip-update

Zip update
Merge latest code