Fixes #1
Fixes #1

Marked BWWalkthroughPageViewController properties as IBInspectable.

Note: IB doesn't correctly support CGPoint of CGFloat. So if you modify speed or speedVariance via "IBInspectable" in IB you can only use Integer values. To set CGFloat value update directly the Runtime Attributes panel as you did before this commit.

XBeg9/BWWalkthrough,ariok/BWWalkthrough,yoichitgy/BWWalkthrough,mekentosj/BWWalkthrough,attheodo/BWWalkthrough,ariok/BWWalkthrough,wircho/BWWalkthrough,yoichitgy/BWWalkthrough,lexieernst/UI-backend-internathon,mathmatrix828/BWWalkthrough,dimala/BWWalkthrough,maxprig/BWWalkthrough,swipesight/BWWalkthrough,machelix/BWWalkthrough,mathmatrix828/BWWalkthrough,lexieernst/UI-internathon,skeeet/BWWalkthrough,mathmatrix828/BWWalkthrough,swipesight/BWWalkthrough,ernestopino/BWWalkthrough,mohsinalimat/BWWalkthrough