bug fixes

Issue-16 Fix 90 degree bug in find findPoint

Actually very similar to issue-11, but I just didn't solve it 100%

Resolve issue with inverted faces in polyRoundExtrude

Resolve an issue with 90 angles in beamChain
Resolve an issue where extrude length would change for negative radius in polyRoundExtrude
Add test geometries

Merge pull request #7 from Irev-Dev/update-polyRoundExtrude-api-a-little

Change polyRoundExtrude h to length in the api for consistency

Merge pull request #3 from Irev-Dev/organise-examples-and-improve-naming

Organise examples and improve naming

Major restructuring unifying 2 space indentation and putting each chi…

…ld on new line to be better for git, still need to decise what to do with for loops inside arrays and turnerary opperators