Some clarifications added

I added a few tips to help noobs get started with registering helper functions and validations.  Prior to my changes, the docs did not fully demonstrate where to add these rules, so the user was left guessing and googling for possible solutions.
You're correct.  The method itself is camel-cased, but the name of an attribute names turns studly-case, which is where the confusion usually lies.  There are so many unwritten conventions throughout Laravel it confuses the noobs to no end.  At least discuss the "magic" that's going on behind the scenes.