Merge pull request #1 from JapaMala/master

Got diagonal rivers working
Changed Release mode compile options & added readkey
Merge branch 'master' of https://github.com/Skyyrunner/BezierRivers
Slight change to make rivers connect better.
Merge branch 'master' of https://github.com/Skyyrunner/BezierRivers
Separated the Main() function into a different CS file, to ease use in other projects.