Rewritten checker for breakpoints

Rewritten breakpoint checker to even check if the movement direction
changes + made code shorter
link rel != javascript

Herped with a copy pasted which caused the javascript to never load
scipt != css

I really need to check my copy=pastes more. Now gave the css a
javascript notation -.-
Make names better readable

Cause who dosn't care about our names
Name change

Simple name change to keep consistancie
Added exercise

For later use, update function stil not used
Added start and update

Basic start and update function that check the accelerometer for changes
Update frequency change + sensitivity

As stated above