documentation missing #anchor-lines

[objectiveSee]

Minor bug: There are URLs in the README which reference https://github.com/Prozi/detect-collisions#anchor-lines however the #anchor-lines ref does not go anywhere. Should it point to #lines or should there be a different link to an #anchor-lines section?

Example: See URLs for Lines in this section: https://github.com/Prozi/detect-collisions#concave-polygons

[Prozi]

@objectiveSee thank you :)

I've fixed this now, it was supposed to point just a bit up, to lines.

what it means is polygons are hollow, they are like a skeleton, if there is another object inside, you have to handle that yourself. how to push away objects from themselves is up to a physics system and application using this library. as the use will differ from case to case (will it bounce? based on what? will it just stick and move away, proportionally? etc)

[objectiveSee]

Got it! Thank you